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-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

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-Publisher FASB

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-Section 55

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Commitments and Contingencies - Operating Lease Commitments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Future Minimum Rental Commitments
Operating leases, rent expense	$ 1,190us-gaap_LeaseAndRentalExpense	$ 1,403us-gaap_LeaseAndRentalExpense	$ 1,423us-gaap_LeaseAndRentalExpense
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	2,808
2016	2,912
2017	2,227
2018	1,725
2019	1,487
Thereafter	9,941
Operating leases, future minimum payments due	21,100
Third Parties
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	2,132
2016	2,236
2017	1,728
2018	1,537
2019	1,487
Thereafter	9,941
Operating leases, future minimum payments due	19,061
Related Partnership
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	676
2016	676
2017	499
2018	188
2019	0
Thereafter	0
Operating leases, future minimum payments due	$ 2,039
Ownership percentage in partnership	50.00%