Stock-Based Compensation (Details) - Disclosure of share-based compensation arrangements by share-based payment award (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Disclosure of share-based compensation arrangements by share-based payment award [Abstract]
Outstanding Beginning Balance - shares	768,795	882,657
Outstanding Beginning Balance - weighted average exercise price (in Dollars per share)	$ 5.87	$ 5.65
Outstanding Ending Balance - weighted average remaining contractual term (years)	2 years 244 days
Outstanding Ending Balance - aggregate intrinsic value (in Dollars)	$ 10,273,607
Exercisable at March 31, 2015	763,028
Exercisable at March 31, 2015 (in Dollars per share)	$ 5.80
Exercisable at March 31, 2015	2 years 226 days
Exercisable at March 31, 2015 (in Dollars)	$ 10,244,830
Exercised	(110,500)	(100,911)
Exercised (in Dollars per share)	$ 3.85
Forfeited	(3,362)