Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Operating activities    
Net income $ 6,410 $ 10,274
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 1,515 1,265
Stock-based compensation expense 1,904 1,965
Changes in assets and liabilities:    
Accounts receivable (11,618) (14,064)
Prepaid expenses and other current assets 5,104 4,270
Accounts payable and accrued liabilities 1,939 4,260
Accrued compensation 3,850 2,770
Medical malpractice and self-insurance reserves, net 650 623
Accrued contingent consideration 4,379 (1,189)
Net cash provided by operating activities 14,133 10,174
Investing activities    
Acquisitions of physician practices (13,908) (8,740)
Purchase of property and equipment (1,865) (750)
Net cash used in investing activities (15,773) (9,490)
Financing activities    
Proceeds from long-term debt 15,000 0
Repayments of long-term debt (20,000) (5,000)
Net proceeds from issuance of common stock 1,580 2,160
Excess tax benefits from stock-based compensation 167 420
Net cash used in financing activities (3,253) (2,420)
Net decrease in cash and cash equivalents (4,893) (1,736)
Cash and cash equivalents, beginning of period 14,913 25,010
Cash and cash equivalents, end of period 10,020 23,274
Supplemental disclosure of cash flow information    
Interest 270 102
Income taxes $ 777 $ 635