Annual report pursuant to Section 13 and 15(d)

Nature of Business and Significant Accounting Policies - Earning Per Share (Details)

v3.8.0.1
Nature of Business and Significant Accounting Policies - Earning Per Share (Details) - shares
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]                      
Basic weighted average common shares outstanding (in shares) 10,838,000 10,838,000 10,838,000 10,823,000 10,799,000 10,799,000 10,799,000 10,778,000 10,834,562 10,793,723 10,747,226
Effect of dilutive shares (in shares)                 33,272 34,429 40,044
Diluted weighted average shares outstanding (in shares) 10,903,000 10,857,000 10,862,000 10,849,000 10,853,000 10,826,000 10,826,000 10,806,000 10,867,834 10,828,152 10,787,270