Segment Information - Schedule of Revenues by Geographic Region (Detail) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
$ 43,727
|
$ 19,658
|
$ 20,304
|
$ 18,519
|
$ 40,692
|
$ 19,967
|
$ 22,274
|
$ 24,192
|
$ 102,208
|
$ 107,125
|
| United States [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
90,900
|
94,297
|
| International [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
11,308
|
12,828
|
| As previously reported [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
43,727
|
19,165
|
19,841
|
18,078
|
39,696
|
19,472
|
21,764
|
23,576
|
|
104,508
|
| As previously reported [Member] | United States [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
90,900
|
91,993
|
| As previously reported [Member] | International [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
11,308
|
12,515
|
| Revision [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
$ 0
|
$ 493
|
$ 463
|
$ 441
|
$ 996
|
$ 495
|
$ 510
|
$ 616
|
|
2,617
|
| Revision [Member] | United States [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
0
|
2,304
|
| Revision [Member] | International [Member] |
|
|
|
|
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Total revenues |
|
|
|
|
|
|
|
|
$ 0
|
$ 313
|