Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We accrued interest expense of $48 thousand and $75 thousand during the three-month periods ended June 30, 2017 and June 30, 2016, respectively, and $103 thousand and $127 thousand during the six-month periods ended June 30, 2017 and June 30, 2016, respectively, excluding the reversal of accrued interest related to adjustments for the remeasurement of uncertain tax positions. Our total gross liability for unrecognized tax benefits at June 30, 2017, is $5.0 million. If recognized, $3.2 million of unrecognized tax benefits would impact our effective tax rate. Interest of $0.9 million has been reflected as a component of the total liability. We expect no other significant increases or decreases for uncertain tax positions during the next twelve months. We file U.S. federal income tax returns, as well as income tax returns in various states and several foreign jurisdictions. The years 2013 through 2016 are open for examination by the Internal Revenue Service (“IRS”), and various years are open for examination by state and foreign tax authorities. State and foreign jurisdictional statutes of limitations generally range from three to four years.

Income Taxes

6 Months Ended

Jun. 30, 2017

We accrued interest expense of $48 thousand and $75 thousand during the three-month periods ended June 30, 2017 and June 30, 2016, respectively, and $103 thousand and $127 thousand during the six-month periods ended June 30, 2017 and June 30, 2016, respectively, excluding the reversal of accrued interest related to adjustments for the remeasurement of uncertain tax positions. Our total gross liability for unrecognized tax benefits at June 30, 2017, is $5.0 million. If recognized, $3.2 million of unrecognized tax benefits would impact our effective tax rate. Interest of $0.9 million has been reflected as a component of the total liability. We expect no other significant increases or decreases for uncertain tax positions during the next twelve months.

We file U.S. federal income tax returns, as well as income tax returns in various states and several foreign jurisdictions. The years 2013 through 2016 are open for examination by the Internal Revenue Service (“IRS”), and various years are open for examination by state and foreign tax authorities. State and foreign jurisdictional statutes of limitations generally range from three to four years.