Stockholders' Equity - Summary of Stock Options (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding - Number Of Options | shares	1,665,420
Options Outstanding - Weighted-Average Remaining Life	3 years 7 months 13 days
Options Outstanding - Weighted Average Exercise Price	$ 1.40
Options Exercisable - Number of Options | shares	1,051,358
Options Exercisable - Weighted Average Exercise Price	$ 1.38
Exercise Price One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower Range Limit	1.15
Range of Exercise Prices - Upper Range Limit	$ 1.56
Options Outstanding - Number Of Options | shares	1,493,298
Options Outstanding - Weighted-Average Remaining Life	3 years 7 months 28 days
Options Outstanding - Weighted Average Exercise Price	$ 1.16
Options Exercisable - Number of Options | shares	969,236
Options Exercisable - Weighted Average Exercise Price	$ 1.16
Exercise Price Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower Range Limit	1.75
Range of Exercise Prices - Upper Range Limit	$ 2.79
Options Outstanding - Number Of Options | shares	61,000
Options Outstanding - Weighted-Average Remaining Life	4 years 6 months 11 days
Options Outstanding - Weighted Average Exercise Price	$ 2.10
Options Exercisable - Number of Options | shares	11,000
Options Exercisable - Weighted Average Exercise Price	$ 2.79
Exercise Price Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices - Lower Range Limit	3.12
Range of Exercise Prices - Upper Range Limit	$ 5.68
Options Outstanding - Number Of Options | shares	111,122
Options Outstanding - Weighted-Average Remaining Life	2 years 7 months 17 days
Options Outstanding - Weighted Average Exercise Price	$ 4.19
Options Exercisable - Number of Options | shares	71,122
Options Exercisable - Weighted Average Exercise Price	$ 4.11