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Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurement [Abstract]

Summary of marketable securities consist of investments

Marketable securities consist of the following (in thousands):


		December 31, 2012												December 31, 2011
		Cost				Gross Unrealized Gains				Recorded Basis				Cost				Gross Unrealized Gains (Losses)				Recorded Basis				Fair Value Category
Current:
Available-for-sale:
Municipal bonds		$	409			$	1			$	410			$	5,804			$	8			$	5,812				2
Corporate bonds			14,764				16				14,780				11,070				(4	)			11,066				2
U.S. Treasuries			1,555				3				1,558				0				0				0				1

		$	16,728			$	20			$	16,748			$	16,874			$	4			$	16,878

Long term:
Available-for-sale:
Municipal bonds		$	292			$	1			$	293			$	0			$	0			$	0				2
Corporate bonds			9,111				28				9,139				14,971				(33	)			14,938				2
Held-to-maturity:
Corporate bonds			467				0				467				457				0				457				2

		$	9,870			$	29			$	9,899			$	15,428			$	(33	)		$	15,395

Summary of company's restricted marketable securities and workers' compensation deposits

The Company’s restricted marketable securities component of restricted marketable securities and workers’ compensation deposits consists of the following (in thousands):


		December 31, 2012												December 31, 2011
		Cost				Gross Unrealized Gains				Recorded Basis				Cost				Gross Unrealized Gains (Losses)				Recorded Basis				Fair Value Category
Available-for-sale:
Municipal bonds		$	4,920			$	17			$	4,937			$	5,580			$	17			$	5,597				2
Corporate bonds			2,035				5				2,040				148				(1	)			147				2
U.S. treasuries			1,780				0				1,780				1,567				0				1,567				1

		$	8,735			$	22			$	8,757			$	7,295			$	16			$	7,311