Revenue Recognition - Contract Balances with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Trade accounts receivable
Total trade accounts receivable	$ 172,086		$ 162,405
Contract assets	58,500		55,295
Allowance for doubtful accounts	(14,028)		(16,604)
Total trade accounts receivable and contract assets, net	216,558		201,096
Trade accounts receivable - DISH Network	19,510		14,200
Contract liabilities:
Current	90,180		72,284
Noncurrent	10,778		10,133
Total contract liabilities	100,958		82,417
Change in Contract with Customer, Asset and Liability [Abstract]
Revenue recognized	39,000
Revenue, Performance Obligation [Abstract]
Bad debt expense	4,000	$ 5,000
Remaining performance obligation	$ 1,100,000
Percent of performance obligation expected to be recognized in next 12 months	36.00%
Trade accounts receivable
Trade accounts receivable
Total trade accounts receivable	$ 164,310		154,415
Trade accounts receivable - DISH Network	17,252		12,274
Lease revenue
Trade accounts receivable
Total trade accounts receivable	7,776		7,990
Trade accounts receivable - DISH Network	$ 2,258		$ 1,926