Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 17,865	$ 50,768
Trade accounts receivable, net	147,141	126,484
Prepaid expenses and other	8,582	3,899
Investments	965	5,675
Restricted cash and investments	87,516	48,557
Total current assets	262,069	235,383
Investments	590	642
Property, equipment and software, net	27,035	26,673
Restricted cash and investments	259,797	252,707
Goodwill	47,820	47,820
Other assets	3,196	9,293
Deferred income taxes	9,292	9,370
Total assets	609,799	581,888
Current liabilities:
Current portion of long-term debt	221	221
Accounts payable	4,945	4,944
Accrued payroll, payroll taxes and related benefits	166,982	153,110
Income taxes payable	174	3,041
Other accrued liabilities	7,891	7,674
Workers' compensation claims liabilities	88,431	81,339
Safety incentives liability	26,084	24,835
Total current liabilities	294,728	275,164
Long-term workers' compensation claims liabilities	241,648	231,198
Long-term debt	4,263	4,392
Customer deposits and other long-term liabilities	1,297	1,441
Total liabilities	541,936	512,195
Commitments and contingencies (Notes 4 and 6)
Stockholders' equity:
Common stock, $.01 par value; 20,500 shares authorized, 7,256 and 7,244 shares issued and outstanding	73	72
Additional paid-in capital	11,420	9,638
Accumulated other comprehensive income (loss)	110	(3)
Retained earnings	56,260	59,986
Total stockholders' equity	67,863	69,693
Total liabilities and stockholders' equity	$ 609,799	$ 581,888