CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 79,851	$ 57,551	$ 229,361	$ 134,023
Insurance collateral	21,416	24,481
Trade and other accounts receivable, net	665,303	625,413
Parts and supplies inventory	22,100	22,050
Prepaids and other current assets	26,226	23,514
Total current assets	814,896	753,009
Non-current assets:
Property, plant and equipment, net	186,604	191,864
Intangible assets, net	549,505	564,218
Insurance collateral	18,672	20,760
Goodwill	2,416,739	2,413,632
Other long-term assets	83,157	85,857
Total assets	4,069,573	4,029,340
Current liabilities:
Accounts payable	58,740	53,792
Accrued liabilities	398,806	387,430
Current deferred tax liabilities	24,817	23,568
Current portion of long-term debt	12,277	12,282
Total current liabilities	494,640	477,072
Long-term debt	2,231,550	2,209,923
Long-term deferred tax liabilities	156,850	156,850
Insurance reserves and other long-term liabilities	206,487	209,593
Total liabilities	3,089,527	3,053,438
Equity:
Common stock ($0.01 par value; 1,000 shares authorized, issued and outstanding as of March 31, 2013 and December 31, 2012)
Treasury stock at cost	(415)	(381)
Additional paid-in capital	910,284	908,488
Retained earnings	64,594	61,478
Accumulated other comprehensive loss	(947)	(213)
Total Emergency Medical Services Corporation equity	973,516	969,372
Noncontrolling interest	6,530	6,530
Total equity	980,046	975,902
Total liabilities and equity	$ 4,069,573	$ 4,029,340