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SELECTED QUARTERLY FINANCIAL DATA (Tables)
 12 Months Ended
Jan. 01, 2017
Selected Quarterly Financial Information [Abstract]  
Schedule of Quarterly Financial Information
SELECTED QUARTERLY FINANCIAL DATA
(unaudited; in thousands, except per share data)
First
Second
Third
Fourth
2017
 
 
 
 
Revenue from services
$
568,244

$
610,122

$
660,780

$
669,625

Cost of services
428,815

454,842

488,761

501,880

Gross profit
139,429

155,280

172,019

167,745

Selling, general and administrative expense
121,844

124,754

131,552

132,644

Depreciation and amortization
11,174

12,287

11,189

11,465

Income from operations
6,411

18,239

29,278

23,636

Interest expense
(1,232
)
(1,296
)
(1,365
)
(1,601
)
Interest and other income
1,306

1,451

1,146

1,577

Interest and other income (expense), net
74

155

(219
)
(24
)
Income before tax expense
6,485

18,394

29,059

23,612

Income tax expense
1,811

5,260

7,838

7,185

Net income
$
4,674

$
13,134

$
21,221

$
16,427

Net income per common share:
 
 
 
 
Basic
$
0.11

$
0.32

$
0.52

$
0.41

Diluted
$
0.11

$
0.31

$
0.51

$
0.40

 
 
 
 
 
2016
 
 
 
 
Revenue from services
$
645,980

$
672,612

$
697,097

$
734,951

Cost of services
495,468

502,688

518,702

554,064

Gross profit
150,512

169,924

178,395

180,887

Selling, general and administrative expense
130,624

135,787

134,679

145,387

Depreciation and amortization
11,289

11,694

11,690

12,019

Goodwill and intangible asset impairment charge
—

99,269

4,275

—

Income (loss) from operations
8,599

(76,826
)
27,751

23,481

Interest expense
(1,969
)
(1,740
)
(1,721
)
(1,736
)
Interest and other income
950

853

854

1,164

Interest and other income (expense), net
(1,019
)
(887
)
(867
)
(572
)
Income (loss) before tax expense
7,580

(77,713
)
26,884

22,909

Income tax expense (benefit)
612

(13,978
)
3,455

4,822

Net income (loss)
$
6,968

$
(63,735
)
$
23,429

$
18,087

Net income (loss) per common share:
 
 
 
 
Basic
$
0.17

$
(1.53
)
$
0.56

$
0.43

Diluted
$
0.17

$
(1.53
)
$
0.56

$
0.43