UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income, net of tax
Beginning balance (in shares) at Dec. 31, 2015		48,475
Beginning balance at Dec. 31, 2015	$ 289,938	$ 32,776	$ 256,747	$ 415
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(895)		(895)
Other comprehensive gain (loss), net of tax	6,373			6,373
Dividends declared ($0.25 per share)	(12,228)		(12,228)
Dividends reinvested in common stock (in shares)		19
Dividends reinvested in common stock	524	$ 524
Stock based compensation	3,506	$ 3,506
Stock options exercised (in shares)		371
Stock options exercised	3,359	$ 3,359
Common stock issued for share awards (in shares)		190
Common stock issued for share awards	0
Common stock issued (in shares)		2
Common stock issued	14	$ 14
Common stock issued to acquire non-controlling interests of nTelos (in shares)		76
Common stock issued to acquire non-controlling interests of nTelos	10,400	$ 10,400
Common stock repurchased (in shares)		(198)
Common stock repurchased	(5,097)	$ (5,097)
Ending balance (in shares) at Dec. 31, 2016		48,935
Ending balance at Dec. 31, 2016	295,894	$ 45,482	243,624	6,788
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	2,261		2,261
Other comprehensive gain (loss), net of tax	(776)			(776)
Stock based compensation	2,805	$ 2,805
Stock options exercised (in shares)		15
Stock options exercised	108	$ 108
Common stock issued for share awards (in shares)		153
Common stock issued (in shares)		1
Common stock issued	10	$ 10
Common stock issued to acquire non-controlling interests of nTelos (in shares)		76
Common stock issued to acquire non-controlling interests of nTelos	0	$ 0
Common stock repurchased (in shares)		(55)
Common stock repurchased	(1,639)	$ (1,639)
Ending balance (in shares) at Jun. 30, 2017		49,125
Ending balance at Jun. 30, 2017	$ 298,663	$ 46,766	$ 245,885	$ 6,012