Segment Information (Details)
$ in Thousands |
3 Months Ended |
9 Months Ended |
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2016
USD ($)
segment
|
Sep. 30, 2015
USD ($)
|
| Segment Reporting [Abstract] |
|
|
|
|
| Reportable business segments | segment |
|
|
3
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Revenue |
$ 472,636
|
$ 382,859
|
$ 1,414,367
|
$ 1,060,513
|
| Segment operating income |
46,683
|
37,607
|
141,871
|
92,551
|
| 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
|
| Operating segments [Member] |
|
|
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Revenue |
472,636
|
382,859
|
1,414,367
|
1,060,513
|
| Segment operating income |
72,289
|
58,749
|
218,462
|
153,414
|
| Operating segments [Member] | Nurse and allied solutions [Member] |
|
|
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Revenue |
286,810
|
246,748
|
877,197
|
690,234
|
| Segment operating income |
37,396
|
32,354
|
118,517
|
90,875
|
| Operating segments [Member] | Locum tenens solutions [Member] |
|
|
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Revenue |
108,553
|
101,755
|
320,420
|
285,835
|
| Segment operating income |
14,026
|
13,321
|
43,634
|
34,142
|
| Operating segments [Member] | Other workforce solutions [Member] |
|
|
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Revenue |
77,273
|
34,356
|
216,750
|
84,444
|
| Segment operating income |
20,867
|
13,074
|
56,311
|
28,397
|
| Unallocated corporate overhead [Member] |
|
|
|
|
| Schedule of reconciliation of revenue and segment operating income by reportable segment to consolidated results |
|
|
|
|
| Unallocated corporate overhead |
$ 15,113
|
$ 13,817
|
$ 45,908
|
$ 38,681
|