Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Face (par) amount of debt instrument at time of issuance.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Long-Term Debt - Additional Information (Detail) (USD $)	9 Months Ended						3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Revolving Line of Credit [Member] Deutsche Bank [Member]	Mar. 29, 2013 Revolving Line of Credit [Member] Deutsche Bank [Member]	Sep. 30, 2014 Surplus Note [Member]	Dec. 31, 2013 Surplus Note [Member]	Sep. 30, 2014 Term Loan [Member]	Sep. 30, 2013 Term Loan [Member]	Sep. 30, 2014 Term Loan [Member]	Sep. 30, 2013 Term Loan [Member]	Dec. 31, 2013 Term Loan [Member]	May 23, 2013 Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt surplus					$ 17,647,000	$ 18,750,000
Long-term debt							13,149,000		13,149,000		18,490,000
Unsecured line of credit, maximum borrowing capacity				10,000,000
Unsecured line of credit, amount drawn			0
Unsecured term loan agreement							14,000,000		14,000,000		20,000,000	20,000,000
Amortization of discount	$ 659,000	$ 349,000					$ 179,000	$ 248,000	$ 659,000	$ 349,000