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Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
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Oct. 02, 2011 sqft | Jun. 01, 2004 sqft | Dec. 31, 2013 | Oct. 02, 2011 Land Owned [Member] | Jun. 01, 2004 Land Owned [Member] | Oct. 02, 2011 Building [Member] | Jun. 01, 2004 Building [Member] | Dec. 31, 2013 December 20, 2018 [Member] | Dec. 31, 2013 Fixed Rate Notes [Member] | Dec. 31, 2012 Fixed Rate Notes [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Dec. 31, 2012 Revolving Credit Facility [Member] | Oct. 26, 2012 Revolving Credit Facility [Member] | Dec. 31, 2013 Minimum [Member] | Dec. 31, 2013 Minimum [Member] October 26th Fixed Rate Debt [Member] | Dec. 31, 2013 Minimum [Member] Revolving Credit Facility [Member] | Dec. 31, 2013 Maximum [Member] | Dec. 31, 2013 Maximum [Member] Revolving Credit Facility [Member] | Dec. 31, 2013 Maximum [Member] Seven Year Fixed Rate Notes [Member] October 26th Fixed Rate Debt [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |
Applicable margin added to the interest rate post amendment |  |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  | 1.25% |  | 2.25% |
Method of determining interest rate under revolving credit facility |  |  | LIBOR plus an applicable margin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable margin added to the interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  | 3.50% |  |
Other notes payable |  |  | 5,714 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of fixed interest rate bearing pre amendment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.39% |  |  |  |
Percentage of fixed interest rate bearing post amendment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.89%
Fixed charge coverage ratio current required minimum |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Potential to expand credit facility under credit agreement |  |  | 35,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of credit facility to meet short term cash flow needs |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized balance |  |  |  |  |  |  |  |  | 34 | 157 | 1,617 | 2,012 |  |  |  |  |  |  |
Fixed rate notes payable |  |  | 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable |  |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |
Period of lease agreement | 20 years | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease of land and building | 75,000 | 110,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value |  |  |  | 892 | 545 | 1,156 | 2,016 |  |  |  |  |  |  |  |  |  |  |  |
Undiscounted annual lease payments | 193 | 299 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate non discounted lease payments over the twenty year term | $ 3,850 | $ 5,988 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Area of land and buildings under lease. + References No definition available. + Details
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- Definition Potential to expand credit facility under credit agreement. + References No definition available. + Details
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- Definition Fair value portion of the lessor's net investment in nonoperating or leveraged leases expected to be realized or consumed after one year or normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 + Details
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