Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended		12 Months Ended
	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