Summary of Significant Accounting Policies Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ (11,176)	$ 2,324	$ 1,150	$ 1,197	$ 806	$ 1,824	$ 1,307	$ 856	$ (6,505)	$ 4,793	$ 4,529
Weighted Average Number of Shares Outstanding, Basic									50,082,000	50,082,000	50,007,000
Net Income Allocated to Class A Stock									(6,439)	4,745	4,483
Net Income Allocated to Class B Stock									$ (66)	$ 48	$ 46
Warrants Associated with Series A-2 Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Stock Issued During Period Shares Warrants Exercised										113,057
Common Class A [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding, Basic									49,080,000	49,080,000	49,005,000
Earnings Per Share, Basic and Diluted									$ (0.13)	$ 0.10	$ 0.09
Common Class B [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding, Basic and Diluted									1,002,000	1,002,000	1,002,000
Earnings Per Share, Basic and Diluted									$ (0.07)	$ 0.05	$ 0.05
Warrant Noncash Provision [Member] | Warrants Associated with Series A-2 Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Stock Issued During Period Shares Warrants Exercised										13,606