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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Contingency [Line Items] |  |  |  |
income tax benefits reflected in additional paid-in-capital |  | $ 1,004 | $ 772 | $ (133)
Increase (Decrease) in valuation allowance due to state net operating loss and tax credit carryforwards |  | (100) | 300 |
State net operating loss carryforwards |  | 23,900 |  |
State tax credit carryforwards |  | 1,500 |  |
Unrecognized tax benefits that would impact effective tax rate |  | 2,600 |  |
Reductions in the liability for unrecognized tax benefits due to expiration of statues of limitation |  | 300 |  |
Accrued interest expense |  | 200 | 200 |
Liability for interest expense |  | 400 | 300 |
Liability for penalties |  | 300 | 300 |
2013 and 2014 [Member] | Internal Revenue Service [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Audit settlement, net | $ 500 |  |  |
Non-Qualified Stock Option [Member] | Restricted Stock Awards [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
income tax benefits reflected in additional paid-in-capital |  | $ 1,100 | $ 900 | $ 500

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- Definition Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP). + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
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