Accrued Expenses and Other Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accrued Expenses and Other Current Liabilities
Payroll and related benefits	$ 26,605,000	$ 11,020,000
Sales, use and other taxes	1,776,000us-gaap_TaxesPayableCurrent	5,402,000us-gaap_TaxesPayableCurrent
Contingent consideration		20,098,000
Warranty	5,411,000	5,662,000
Restructuring liability	1,428,000us-gaap_RestructuringReserveCurrent	533,000us-gaap_RestructuringReserveCurrent
Other	13,198,000us-gaap_OtherAccruedLiabilitiesCurrent	8,369,000us-gaap_OtherAccruedLiabilitiesCurrent
Total	48,418,000us-gaap_AccruedLiabilitiesCurrent	51,084,000us-gaap_AccruedLiabilitiesCurrent
Customer Deposits and Deferred Revenue
Customer deposits	$ 73,000,000us-gaap_CustomerDepositsCurrent	$ 27,500,000us-gaap_CustomerDepositsCurrent

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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-Publisher FASB

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The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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-Publisher SEC

-Name Regulation S-X (SX)

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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