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Income Taxes
3 Months Ended
Mar. 31, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The Company files U.S. federal income tax returns and various state income tax returns. The Company is not subject to any state or federal income tax audits as of March 31, 2021. The Company's returns are generally open to examination from 2017 forward and the net operating losses acquired in the acquisition of nTelos are open to examination from 2002 forward.

The effective tax rates for the three months ended March 31, 2021 and 2020, differ from the statutory U.S. federal income tax rate of 21% primarily due to the state income taxes, excess tax benefits and other discrete items.
 Three Months Ended
March 31,
(in thousands)20212020
Expected tax expense at federal statutory$834 $(129)
State income taxes, net of federal tax effect315 (28)
Excess tax benefit from share based compensation and other, net(227)(608)
Income tax (benefit) expense $922 $(765)

The Company's cash refunds for income taxes were $0.8 million in the three months ended March 31, 2021. The Company had no significant cash payments or refunds for income taxes during the three months ended March 31, 2020.