Segment Information (Tables)
9 Months Ended
Sep. 30, 2016
Segment Reporting [Abstract]  
Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results
The following table, which includes reclassified prior period data to conform to the new segment reporting structure, provides a reconciliation of revenue and operating income by reportable segment to consolidated results and was derived from each segment’s internal financial information as used for corporate management purposes:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
Revenue
 
 
 
 
 
 
 
Nurse and allied solutions
$
286,810

 
$
246,748

 
$
877,197

 
$
690,234

Locum tenens solutions
108,553

 
101,755

 
320,420

 
285,835

Other workforce solutions
77,273

 
34,356

 
216,750

 
84,444

 
$
472,636

 
$
382,859

 
$
1,414,367

 
$
1,060,513

Segment operating income
 
 
 
 
 
 
 
Nurse and allied solutions
$
37,396

 
$
32,354

 
$
118,517

 
$
90,875

Locum tenens solutions
14,026

 
13,321

 
43,634

 
34,142

Other workforce solutions
20,867

 
13,074

 
56,311

 
28,397

 
72,289

 
58,749

 
218,462

 
153,414

Unallocated corporate overhead
15,113

 
13,817

 
45,908

 
38,681

Depreciation and amortization
7,789

 
5,304

 
21,888

 
15,631

Share-based compensation
2,704

 
2,021

 
8,795

 
6,551

Interest expense, net, and other
3,016

 
2,013

 
9,065

 
5,797

Income before income taxes
$
43,667

 
$
35,594

 
$
132,806

 
$
86,754

Schedule of goodwill
The following table summarizes the activity related to the carrying value of goodwill by reportable segment:
 
Nurse and Allied Solutions
 
Locum Tenens Solutions
 
Other Workforce Solutions
 
Total
Balance, January 1, 2016
$
95,309

 
$
19,743

 
$
89,727

 
$
204,779

Goodwill from BES acquisition

 

 
90,594

 
90,594

Goodwill from HSG acquisition
8,780

 

 

 
8,780

Goodwill from Peak acquisition

 

 
37,147

 
37,147

Goodwill adjustment for OH acquisition
850

 

 

 
850

Goodwill adjustment for TFS acquisition

 

 
24

 
24

Balance, September 30, 2016
$
104,939

 
$
19,743

 
$
217,492

 
$
342,174

Accumulated impairment loss as of December 31, 2015 and September 30, 2016
$
154,444

 
$
53,940

 
$
6,555

 
$
214,939