Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 44,570	$ 35,371
Investments	82,590	416
Trade accounts receivable, net	163,561	151,597
Income taxes receivable	1,335
Prepaid expenses and other	14,919	13,880
Restricted cash and investments	116,873	120,409
Total current assets	423,848	321,673
Investments		1,687
Property, equipment and software, net	31,724	24,812
Operating lease right-of-use assets	23,805
Restricted cash and investments	327,326	348,165
Goodwill	47,820	47,820
Other assets	3,618	3,474
Deferred income taxes	2,788	8,458
Total assets	860,929	756,089
Current liabilities:
Current portion of long-term debt	221	221
Accounts payable	5,993	4,336
Accrued payroll, payroll taxes and related benefits	174,168	158,683
Income taxes payable		4,403
Current operating lease liabilities	6,671
Other accrued liabilities	8,846	20,566
Workers' compensation claims liabilities	118,273	109,319
Safety incentives liability	27,950	29,210
Total current liabilities	342,122	326,738
Long-term workers' compensation claims liabilities	320,713	304,078
Long-term debt	3,730	3,951
Long-term operating lease liabilities	17,883
Customer deposits and other long-term liabilities	4,682	2,285
Total liabilities	689,130	637,052
Commitments and contingencies (Notes 6, 8 and 12)
Stockholders' equity:
Common stock, $.01 par value; 20,500 shares authorized, 7,514 and 7,395 shares issued and outstanding in 2019 and 2018, respectively	75	74
Additional paid-in capital	20,227	15,437
Accumulated other comprehensive income (loss)	2,819	(5,068)
Retained earnings	148,678	108,594
Total stockholders' equity	171,799	119,037
Total liabilities and stockholders' equity	$ 860,929	$ 756,089