Stock-Based Compensation (Details 2) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Assumptions used to determine fair value of stock options granted
Granted (in shares)	1,250	4,250
Shares
Granted (in shares)	1,250	4,250
Weighted Average Exercise Price
Aggregate intrinsic value of all options outstanding	$ 41,000
Aggregate intrinsic value of all options exercisable	$ 14,000
Employee Stock Option [Member]
Assumptions used to determine fair value of stock options granted
Dividend yield (as a percent)	0.00%	0.00%
Expected volatility (as a percent)	44.30%	43.90%
Expected life of option	5 years	5 years
Risk-free interest rate (as a percent)	1.70%	0.70%
Fair value of each option on grant date (in dollars per share)	$ 11.49	$ 4.72
Granted (in shares)	1,250
Shares
Outstanding at January 1, 2014 (in shares)	11,417
Granted (in shares)	1,250
Exercised (in shares)	(5,916)
Expired and forfeited (in shares)	(1,666)
Outstanding at September 30, 2014 (in shares)	5,085
Exercisable at September 30, 2014 (in shares)	1,083
Weighted Average Exercise Price
Outstanding at January 1, 2014 (in shares)	$ 8.87
Granted (in dollars per share)	$ 28.25
Exercised (in dollars per share)	$ 7.56
Expired and forfeited (in dollars per share)	$ 7.77
Outstanding at September 30, 2014 (in dollars per share)	$ 15.51
Exercisable at September 30, 2014 (in dollars per share)	$ 9.46
Restricted Stock [Member]
Assumptions used to determine fair value of stock options granted
Granted (in shares)		0
Shares
Granted (in shares)		0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at January 1, 2014 (in shares)	0
Granted (in shares)	3,000
Forfeited (in shares)	3,000
Outstanding at September 30, 2014	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Granted	$ 28.25
Forfeited	$ 28.25