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Other Accrued Expenses (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Payables and Accruals [Abstract]    
Deposits and amounts due to customers $ 5,439us-gaap_CustomerAdvancesAndDepositsCurrent $ 10,591us-gaap_CustomerAdvancesAndDepositsCurrent
Dividends payable 4,265us-gaap_DividendsPayableCurrent 4,267us-gaap_DividendsPayableCurrent
Accrued legal and professional fees 5,064us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent 3,458us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent
Other accrued expenses 9,013us-gaap_OtherAccruedLiabilitiesCurrent 7,856us-gaap_OtherAccruedLiabilitiesCurrent
Other accrued expenses, Total $ 23,781us-gaap_AccruedLiabilitiesCurrent $ 26,172us-gaap_AccruedLiabilitiesCurrent