CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 111,332	$ 107,869
Accounts receivable, less allowances of $1,286 and $1,300, respectively	22,638	24,969
Tax receivables	62	155
Prepaid expenses and other	5,290	7,095
Inventory, net	2,291	2,673
Total current assets	141,613	142,761
Property and equipment, at cost:
Land, buildings and improvements	3,699	3,683
Paging and computer equipment	116,270	117,610
Furniture, fixtures and vehicles	4,334	4,333
Property and equipment, gross	124,303	125,626
Less accumulated depreciation and amortization	108,917	108,231
Property and equipment, net	15,386	17,395
Goodwill	133,031	133,031
Other intangibles, net	14,964	19,698
Deferred income tax assets, less valuation allowance of $45,777 and $114,190, respectively	83,983	24,143
Other assets	1,445	862
TOTAL ASSETS	390,422	337,890
Current liabilities:
Accounts payable	2,121	2,784
Accrued compensation and benefits	9,508	12,460
Accrued network cost	917	1,072
Accrued taxes	3,465	4,195
Accrued severance and restructuring	1,356	1,581
Accrued other	2,744	3,637
Deferred revenue	27,045	24,034
Total current liabilities	47,156	49,763
Deferred revenue	741	937
Other long-term liabilities	8,972	8,131
TOTAL LIABILITIES	$ 56,869	$ 58,831
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY:
Preferred stock—$0.0001 par value; 25,000,000 shares authorized; no shares issued or outstanding	$ 0	$ 0
Common stock—$0.0001 par value; 75,000,000 shares authorized; 20,886,261 shares issued and outstanding as of December 31, 2015 and 21,419,073 shares issued and 21,978,762 shares outstanding at December 31, 2014	2	2
Additional paid-in capital	110,435	126,678
Retained earnings	223,116	152,379
TOTAL STOCKHOLDERS’ EQUITY	333,553	279,059
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 390,422	$ 337,890