Stockholders' Equity and Equity Compensation (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) plan $ / shares shares	Jun. 30, 2014 USD ($) $ / shares	Jun. 30, 2015 USD ($) plan $ / shares shares	Jun. 30, 2014 USD ($) $ / shares	Feb. 28, 2015 USD ($)
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Number of equity based compensation plans | plan	2		2
Closing stock price (in dollars per share) | $ / shares	$ 18.94	$ 23.27	$ 18.94	$ 23.27
Stock Options [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Stock repurchased during period, shares | shares			88,834
Stock repurchased during period, value			$ 1,400,000
Stock repurchased during period, net cash value			100,000
Share based compensation expense	$ 0	$ 100,000	$ 100,000	$ 500,000
Weighted average recognition period			1 year 1 month 1 day
Stock Options [Member] | Minimum [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Award vesting period			7 years
Stock Options [Member] | Maximum [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Award vesting period			10 years
Stock Awards [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share based compensation expense	2,000,000	$ 1,000,000	$ 3,500,000	1,900,000
Unrecognized share based compensation expense	$ 18,200,000		$ 18,200,000
Weighted average recognition period			2 years 3 months
Deferred Stock Units [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share based compensation expense			$ 900,000	$ 800,000
2013 Employee Plan [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Number of shares of common stock reserved for issuance | shares	2,895,000		2,895,000
Number of shares available for issuance | shares	1,019,009		1,019,009
2011 Director Plan [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Number of shares of common stock reserved for issuance | shares	250,000		250,000
Number of shares available for issuance | shares	72,654		72,654
Open Market Repurchase Program [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share repurchase program, authorized amount					$ 20,000,000
Stock repurchased during period, shares | shares			1,091,122
Stock repurchased during period, value			$ 20,000,000
Shares repurchased, average price per share (in Dollars per share) | $ / shares			$ 18.33
Equity Compensation Programs [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share repurchase program, authorized amount	$ 10,000,000		$ 10,000,000
Stock repurchased during period, shares | shares			31,377
Stock repurchased during period, value			$ 500,000
Shares repurchased, average price per share (in Dollars per share) | $ / shares			$ 16.96