Sentel Acquisition - Additional Information (Details) - USD ($)
$ in Thousands |
|
2 Months Ended |
3 Months Ended |
|
Jan. 23, 2018 |
Mar. 30, 2018 |
Mar. 30, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
| Preliminary purchase price, net of cash acquired |
|
|
$ 37,210
|
$ 0
|
|
| Goodwill |
|
$ 231,236
|
$ 231,236
|
|
$ 216,930
|
| Sentel Corporation |
|
|
|
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
| Percentage of outstanding common stock acquired |
100.00%
|
|
|
|
|
| Preliminary purchase price, net of cash acquired |
$ 37,200
|
|
|
|
|
| Consideration transferred |
36,000
|
|
|
|
|
| Working capital adjustments |
1,200
|
|
|
|
|
| Weighted average remaining useful life |
|
|
5 years 4 months 10 days
|
|
|
| Amortization expense |
|
|
$ 400
|
|
|
| Goodwill |
14,306
|
|
|
|
|
| Acquisition related costs |
|
|
$ 700
|
|
|
| Revenue of acquiree since acquisition date |
|
$ 23,100
|
|
|
|
| Sentel Corporation | Backlog |
|
|
|
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
| Intangible assets |
6,500
|
|
|
|
|
| Amortization period |
|
|
4 years
|
|
|
| Sentel Corporation | Re-competes |
|
|
|
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
| Intangible assets |
$ 4,000
|
|
|
|
|
| Amortization period |
|
|
8 years
|
|
|
| Sentel Corporation |
|
|
|
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
| Recognized revenue from acquired entity |
|
|
|
$ 29,000
|
|