Segment Information and Major Customers - Revenue and Gross Profit of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 242,852	$ 227,704	$ 225,991	$ 226,173	$ 452,164	$ 679,868	$ 922,720	$ 1,149,100	$ 1,025,536
Cost of Revenue							598,556	817,973	698,284
Gross Profit	89,556	83,034	81,259	70,315	151,574	234,608	324,164	331,127	327,252
Network Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	197,009	181,488	179,194	181,273	360,467	541,955	738,964	974,389	916,793
Cost of Revenue							525,817	748,831	647,105
Gross Profit							213,147	225,558	269,688
Services & Support [Member]
Segment Reporting Information [Line Items]
Revenue	$ 45,843	$ 46,216	$ 46,797	$ 44,900	$ 91,697	$ 137,913	183,756	174,711	108,743
Cost of Revenue							72,739	69,142	51,179
Gross Profit							$ 111,017	$ 105,569	$ 57,564