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	$ 1,645
Property, plant and equipment	1,001
Business Acquisition, Goodwill, Expected Tax Deductible Amount	3,065
Other intangible assets	900
Total assets acquired	6,611
Current liabilities	1,060
Net assets acquired	5,551
Business Combination, Consideration Transferred	$ 5,551