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Stock-Based Compensation Plans (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2013
Contract Costs [Member]
|
Dec. 31, 2012
Contract Costs [Member]
|
Dec. 31, 2011
Contract Costs [Member]
|
Dec. 31, 2013
2006 Restricted Stock Plan [Member]
|
Dec. 31, 2013
2006 Restricted Stock Plan [Member]
Non-employee Director [Member]
|
Dec. 31, 2012
2006 Restricted Stock Plan [Member]
Non-employee Director [Member]
|
Dec. 31, 2011
2006 Restricted Stock Plan [Member]
Non-employee Director [Member]
|
Jan. 02, 2013
2006 Restricted Stock Plan [Member]
Non-employee Director [Member]
|
Jan. 03, 2012
2006 Restricted Stock Plan [Member]
Non-employee Director [Member]
|
Dec. 31, 2013
2006 Restricted Stock Plan [Member]
Employee [Member]
|
Dec. 31, 2012
2006 Restricted Stock Plan [Member]
Employee [Member]
|
Dec. 31, 2011
2006 Restricted Stock Plan [Member]
Employee [Member]
|
Mar. 01, 2013
2006 Restricted Stock Plan [Member]
Employee [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||||||
| Shares authorized (in shares) | 250,000 | |||||||||||||||
| Shares available for issuance (in shares) | 51,503 | |||||||||||||||
| Restricted stock awarded (in shares) | 16,100 | 10,800 | 23,661 | |||||||||||||
| Grant date fair value (in dollars per share) | $ 25.68 | $ 25.22 | $ 22.58 | |||||||||||||
| Vesting period | 3 years | |||||||||||||||
| Stock-based compensation cost, net | $ 1,576 | $ 1,076 | $ 1,427 | $ 970 | $ 662 | $ 881 | ||||||||||
| Tax withholding associated with awards issued | 257 | 332 | 393 | |||||||||||||
| Compensation expense not yet recognized | 891 | |||||||||||||||
| Weighted average amortization period of compensation not yet recognized | 2 years 1 month 6 days | |||||||||||||||
| Stock-based compensation expense | 1,576 | 922 | 1,229 | 1,576 | 1,076 | 1,427 | 413 | 272 | 347 | 1,163 | 650 | 882 | ||||
| Income tax benefit recognized for stock-based compensation | (606) | (414) | (546) | |||||||||||||
| Total stock-based compensation expense, net of income tax | $ 1,576 | $ 1,076 | $ 1,427 | $ 970 | $ 662 | $ 881 | ||||||||||