Assets (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Accounts Receivable, Net
Allowance for doubtful accounts receivable (in dollars)	$ 500,000	$ 700,000
Prepaid expenses and other current assets
Supplier deposits	21,400,000us-gaap_DepositAssets	12,700,000us-gaap_DepositAssets
Inventories
Materials	33,627,000	30,319,000
Work in process	19,381,000	25,096,000
Finished goods	4,189,000	6,056,000
Inventories	$ 57,197,000us-gaap_InventoryNet	$ 61,471,000us-gaap_InventoryNet

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

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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.

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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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