Commitments and Contingencies (Leases) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
2014	$ 10,076
2015	13,444
2016	13,454
2017	13,433
2018	13,440
2019 and thereafter	46,658
Total minimum lease payments	110,505
Less amount representing interest	28,347
Less current maturity of obligations under capital leases	7,673
Long-term obligations under capital leases, excluding current maturity	$ 74,485