CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 01, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 33,408	$ 28,780
Accounts receivable, net of allowance for doubtful accounts of $6,153 and $4,344	370,588	374,273
Prepaid expenses, deposits and other current assets	21,006	20,605
Income tax receivable	7,964	4,621
Total current assets	432,966	428,279
Property and equipment, net	57,055	60,163
Restricted cash and investments	239,390	239,231
Deferred income taxes, net	1,005	3,783
Goodwill	239,380	226,694
Intangible assets, net	102,075	104,615
Other assets, net	52,349	46,266
Total assets	1,124,220	1,109,031
Current liabilities:
Accounts payable and other accrued expenses	69,515	55,091
Accrued wages and benefits	77,113	76,894
Current portion of workers’ compensation claims reserve	69,848	77,218
Other current liabilities	2,653	3,216
Total current liabilities	219,129	212,419
Workers’ compensation claims reserve, less current portion	195,240	197,105
Long-term debt, less current portion	117,199	116,489
Long-term deferred compensation liabilities	23,268	21,866
Other long-term liabilities	6,083	6,305
Total liabilities	560,919	554,184
Commitments and contingencies (Note 9)
Shareholders’ equity:
Preferred stock, $0.131 par value, 20,000 shares authorized; No shares issued and outstanding	0	0
Common stock, no par value, 100,000 shares authorized; 40,595 and 41,098 shares issued and outstanding	1	1
Accumulated other comprehensive loss	(11,634)	(6,804)
Retained earnings	574,934	561,650
Total shareholders’ equity	563,301	554,847
Total liabilities and shareholders’ equity	$ 1,124,220	$ 1,109,031

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682