Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Accounting Policies [Abstract]

Estimated Useful Lives of Property and Equipment

The estimated useful lives of property and equipment for purposes of computing depreciation are as follows:

Buildings and improvements	5-30 years
Computer hardware and software, and acquired technologies	1-5 years
Software development costs	3 years
Furniture and fixtures	5-7 years
Aircraft	20 years

Schedule of Acquired Finite-Lived Intangible Assets by Major Class

The following table provides the gross carrying amount and accumulated amortization for each class of intangible assets and goodwill:

	December 31,
	2011							2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(in thousands)
Amortizable intangible assets:
Trademarks	$	1,785	$	(742	)	$	1,043	$	1,785	$	(568	)	$	1,217
Customer relationships		9,043		(2,809	)		6,234		6,959		(1,252	)		5,707
Goodwill		21,156		-			21,156		14,327		-			14,327
Total goodwill and intangible assets	$	31,984	$	(3,551	)	$	28,433	$	23,071	$	(1,820	)	$	21,251

Carrying Amount of Goodwill

The following summarizes the changes in the carrying amount of goodwill:

	Goodwill
	(in thousands)
Balance at December 31, 2010	$	14,327
Acquisitions		6,829
Balance at December 31, 2011	$	21,156

Activity and Balances Related to Incurred But Not Paid Worker's Compensation Claims

The following table provides the activity and balances related to incurred but not reported workers' compensation claims:

	Year ended December 31,
	2011			2010
	(in thousands)
Beginning balance	$	96,934		$	88,450
Accrued claims		36,845			34,345
Present value discount		(1,513	)		(1,675	)
Paid claims		(27,475	)		(24,186	)
Ending balance	$	104,791		$	96,934
Current portion of accrued claims	$	44,737		$	41,204
Long-term portion of accrued claims		60,054			55,730
	$	104,791		$	96,934