Inventories, Net and Significant Supplier(s) - Related Party Vendor (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Executive Vice President [Member]
Related Party Transaction [Line Items]
Ownership Percentage in Third Party by Executive			40.00%
Affiliated Entity [Member] | Supplier Concentration Risk [Member] | Cost of Goods, Total [Member]
Related Party Transaction [Line Items]
Related Party Purchases	$ 2,357	$ 2,507	$ 4,451	$ 4,230
Concentration Risk	2.70%	3.30%	2.80%	3.00%
Affiliated Entity [Member] | Supplier Concentration Risk [Member] | Accounts Payable [Member]
Related Party Transaction [Line Items]
Concentration Risk			3.30%		3.40%
Related Parties, Accounts Payable	$ 2,596		$ 2,596		$ 2,378