Share-Based Compensation (Details 2) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Stock option activity
Balance at beginning of year (in shares)			832,954	832,954	832,954
Granted (in shares)	0	0	0	0
Balance at end of year (in shares)	832,954	832,954	832,954	832,954	832,954	832,954
Options vested and exercisable (in shares)	555,097		555,097
Weighted Average Exercise Price
Balance at beginning of year (in dollars per share)			$ 17.38	$ 17.38	$ 17.38
Balance at end of year (in dollars per share)	$ 17.38	$ 17.38	17.38	$ 17.38	$ 17.38	$ 17.38
Options vested and exercisable (in dollars per share)	$ 17.38		$ 17.38
Remaining Contractual Life
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2			5 years 2 months 5 days	6 years 2 months 5 days	5 years 8 months 5 days	6 years 8 months 5 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2			5 years 2 months 5 days	6 years 2 months 5 days	5 years 8 months 5 days	6 years 8 months 5 days
Options vested and exercisable			5 years 2 months 5 days
Aggregate Intrinsic Value
Beginning of year			$ 3,471	$ 4,845	$ 4,845
End of year	$ 5,728	$ 2,913	5,728	$ 2,913	$ 3,471	$ 4,845
Options vested and exercisable	$ 3,818		$ 3,818