Inventories - Additional Information (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Concentration Risk [Line Items]
Raw materials	$ 7,827,000		$ 8,254,000
Work in process	461,000		64,000
Finished goods	24,902,000		23,236,000
Total inventories, net	33,190,000us-gaap_InventoryNet		31,554,000us-gaap_InventoryNet
Primary Supplier [Member]
Concentration Risk [Line Items]
Minimum supplier purchase obligations	0
Notice of termination, time upon delivery	2 months
Purchases from supplier	$ 10,000,000	$ 8,900,000

Contract Termination Requirement, Period of Notification

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Payments of cash to suppliers for goods and services during the current period.

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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

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