Business Combination (Tables)

6 Months Ended

Jun. 30, 2012

Business Combination [Abstract]

Components of the preliminary purchase price allocation for propel

Purchase price:
Cash paid	$	186,814
Estimated purchase price adjustment		725
Total estimated purchase price	$	187,539
Allocation of purchase price:
Cash	$	824
Accounts receivable		1,049
Interest receivable		3,679
Property tax payment agreements receivable		132,978
Fixed assets		461
Other assets		860
Liabilities assumed		(2,153	)
Identifiable intangible assets		570
Goodwill		49,271
Total net assets acquired	$	187,539

Future results of operations of the combined companies

	Three Months Ended June  30,				Six Months Ended June  30,
	2012		2011		2012		2011
Consolidated pro forma revenue	$	143,109	$	115,168	$	273,975	$	224,277
Consolidated pro forma income from continuing operations		21,557		15,205		40,708		29,126