Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock Options and Changes During the Period (Details)

v3.10.0.1
Stockholders' Equity - Summary of Stock Options and Changes During the Period (Details) - Stock Options [Member]
9 Months Ended
Sep. 30, 2018
$ / shares
shares
Number of Options, Beginning Balance | shares 448,771
Number of Options, Expired | shares (32,692)
Number of Options, Ending Balance | shares 416,079
Number of Options Vested and Expected to Vest | shares 416,079
Number of Options Vested and Exercisable | shares 404,968
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 15.50
Weighted Average Exercise Price, Expired | $ / shares 10.71
Weighted Average Exercise Price, Ending Balance | $ / shares 15.88
Weighted Average Exercise Price, Options expected to vest | $ / shares 15.88
Weighted Average Exercise Price, Vested and Exercisable | $ / shares $ 16.02
Weighted Average Remaining Life, Beginning Balance 6 years 2 months 23 days
Weighted Average Remaining Life, Ending Balance 5 years 11 months 4 days
Weighted Average Remaining Life, Options expected to vest 5 years 11 months 4 days
Weighted Average Remaining Life, Vested and Exercisable 5 years 10 months 17 days