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Long-Term Debt - Additional Information 1 (Detail) - Revolving Credit Facility | 12 Months Ended
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Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |
Bank credit facility | $ 50,000,000
Maturity of credit facility | Mar. 04, 2019
Credit facility amount outstanding | $ 0
Spread rate over LIBOR for interest rate on credit facility | 2.50%
Stated percentage over federal funds rate to calculate base rate | 0.50%
Stated percentage over 30 day LIBOR to calculate base rate | 1.00%
Spread rate over base rate for interest rate on credit facility | 1.50%
Commitment fee on unused borrowing base | 0.50%
Ratio of current assets to current liabilities | 100.00%
Asset coverage ratio | 250.00%

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- Definition Asset coverage ratio. + References No definition available. + Details
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- Definition Line of credit facility amount outstanding. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Ratio of current assets to current liabilities. + References No definition available. + Details
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- Definition Spread rate over base rate for interest rate on credit facility. + References No definition available. + Details
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- Definition Stated percentage over federal funds rate to calculate base rate. + References No definition available. + Details
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- Definition Stated percentage over thirty days Libor to calculate base rate. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Details
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