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Acquisitions (Details) - HDB, Inc. [Member]
$ in Thousands
Aug. 22, 2014
USD ($)
Business Acquisition [Line Items]  
Business Acquisition, Name of Acquired Entity HDB Ltd. Limited Partnership ("HDB").
Current assets $ 1,658
Property, plant and equipment 1,162
Business Acquisition, Goodwill, Expected Tax Deductible Amount 2,586
Other intangible assets 900
Total assets acquired 6,306
Current liabilities 1,056
Net assets acquired 5,250
Business Combination, Consideration Transferred $ 5,250