Stock Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	May 21, 2015	Nov. 21, 2014	May 21, 2014
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation arrangement, expected dividend rate (in hundredths)	0.00%
Unrecognized compensation expense	$ 140,000
Plan modification, options vested immediately				7,500
Plan modification, restricted shares vesting in six months			1,470
Plan modification, restricted shares vesting in one year		1,470
March 2014 Option Grant [Member]
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, shares granted options to purchase (in shares)	24,576
Exercise price of stock options granted (in dollars per share)	$ 5.82
Percentage of shares vested on first anniversary of the grant date (in hundredths)	30.00%
Percentage of shares vested on second anniversary of the grant date (in hundredths)	30.00%
Percentage of shares vested on third anniversary of the grant date (in hundredths)	40.00%
Stock option, expiration date	Mar. 13, 2019
Grant date fair value	$ 1.88
June 2014 Option Grant [Member]
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, shares granted options to purchase (in shares)	75,000
Exercise price of stock options granted (in dollars per share)	$ 4.90
Percentage of shares vested on grant date	60.00%
Percentage of shares vested on second anniversary of the grant date (in hundredths)	20.00%
Percentage of shares vested on third anniversary of the grant date (in hundredths)	20.00%
Stock option, expiration date	Jun. 11, 2019
Grant date fair value	$ 1.48