Equity-Based Compensation Stock Option Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
2010 Plan [Member]
Stock Option Activity
Beginning of period, outstanding (in shares)	660,471	461,346	265,500
Beginning of period (weighted-average price)	$ 15.93	$ 13.59	$ 12.89
Options granted (in shares)	107,000	207,000	225,596
Options granted (weighted-average price)	$ 16.93	$ 21.03	$ 14.41
Options exercised (in shares)	(5,000)	(2,875)	(20,750)
Options exercised (weighted-average price)	$ 13.18	$ 13.50	$ 13.53
Options canceled or forfeited (in shares)	(130,625)	(5,000)	(9,000)
Options canceled or forfeited (weighted-average price)	$ 17.02	$ 13.18	$ 13.55
Options expired (in shares)	0	0	0
Options expired (weighted-average price)	$ 0.00	$ 0.00	$ 0.00
End of period, outstanding (in shares)	631,846	660,471	461,346
End of period (weighted-average price)	$ 15.89	$ 15.93	$ 13.59
Options exercisable (in shares)	477,722
Options exercisable (weighted-average price)	$ 15.56
Equity Plan [Member]
Stock Option Activity
Beginning of period, outstanding (in shares)	2,472,147	2,584,547	3,175,075
Beginning of period (weighted-average price)	$ 4.67	$ 4.68	$ 4.49
Options granted (in shares)	0	0	0
Options granted (weighted-average price)	$ 0	$ 0.00	$ 0.00
Options exercised (in shares)	(601,800)	(107,775)	(574,353)
Options exercised (weighted-average price)	$ 4.23	$ 4.93	$ 3.58
Options canceled or forfeited (in shares)	0	(2,000)	(13,175)
Options canceled or forfeited (weighted-average price)	$ 0.00	$ 5.92	$ 5.42
Options expired (in shares)	(1,750)	(2,625)	(3,000)
Options expired (weighted-average price)	$ 4.34	$ 3.45	$ 3.56
End of period, outstanding (in shares)	1,868,597	2,472,147	2,584,547
End of period (weighted-average price)	$ 4.82	$ 4.67	$ 4.68
Options exercisable (in shares)	1,868,597
Options exercisable (weighted-average price)	$ 4.82