Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands |
3 Months Ended |
6 Months Ended |
12 Months Ended |
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 31, 2016 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Share available for future grants |
1,700,000
|
|
1,700,000
|
|
|
| Stock options contractual terms |
|
|
10 years
|
|
|
| Share-based compensation expense |
$ 2,509
|
$ 1,681
|
$ 3,820
|
$ 4,245
|
|
| Options granted |
|
|
398,000
|
|
|
| Aggregate intrinsic value of options exercised |
|
|
$ 900
|
|
|
| Weighted average fair value of stock options granted |
|
|
$ 8.33
|
|
|
| Percentage of number of options vested |
|
|
0.00%
|
|
|
| Cancellation of options granted in previous years |
|
|
225,000
|
|
|
| Aggregated grant date fair value of restricted stock awards vested |
|
|
$ 2,300
|
|
|
| Aggregated vesting date fair value of restricted stock awards vested |
|
|
$ 2,300
|
|
|
| Minimum |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Percentage of number of options vested |
|
|
50.00%
|
|
|
| Maximum |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Percentage of number of options vested |
|
|
200.00%
|
|
|
| Vesting target award percentage |
|
|
100.00%
|
|
|
| Rental, selling and general expenses |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Share-based compensation expense |
2,509
|
$ 1,623
|
$ 3,820
|
$ 4,187
|
|
| Rental, selling and general expenses | Executive |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Share-based compensation expense |
1,000
|
|
|
|
|
| Stock options |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Unrecognized compensation cost |
3,800
|
|
$ 3,800
|
|
|
| Weighted average recognition period (years) |
|
|
1 year 3 months 19 days
|
|
|
| Restricted stock awards |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Unrecognized compensation cost |
$ 6,400
|
|
$ 6,400
|
|
|
| Weighted average recognition period (years) |
|
|
2 years 7 months 6 days
|
|
|
| Performance Based Awards |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Options granted |
|
|
|
|
300,000
|
| Cancellation of options granted in previous years |
|
|
200,000
|
|
|