Financing Arrangements	12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]
Financing Arrangements	Note 3. Financing Arrangements In addition to cash on hand, as well as cash generated from operations, the Company relies on its primary and Japan asset-based revolving credit facilities to manage seasonal fluctuations in liquidity and to provide additional liquidity when the Company’s operating cash flows are not sufficient to fund the Company’s requirements. As of December 31, 2016, the Company had $11,966,000 outstanding under these facilities, $823,000 in outstanding letters of credit, and $125,975,000 in cash and cash equivalents. The combined maximum amount that could have been outstanding under both facilities on December 31, 2016, after letters of credit, was $99,241,000, resulting in total available liquidity, including cash on hand of $225,216,000. The maximum amount that could have been outstanding under the Company's primary asset-based revolving credit facility on December 31, 2015 was $105,492,000, and total available liquidity, including cash on hand of $155,293,000. Primary Asset-Based Revolving Credit Facility The Company's primary credit facility is a Loan and Security Agreement with Bank of America N.A. and other lenders (as amended, the “ABL Facility”), which provides a senior secured asset-based revolving credit facility of up to $230,000,000, comprised of a $160,000,000 U.S. facility, a $25,000,000 Canadian facility, and a $45,000,000 United Kingdom facility, in each case subject to borrowing base availability under the applicable facility. The amounts outstanding under the ABL Facility are secured by certain assets, including cash (to the extent pledged by the Company), inventory and accounts receivable of the Company’s subsidiaries in the United States, Canada and the United Kingdom. As of December 31, 2016, the Company had no borrowings outstanding under the ABL Facility and $823,000 in outstanding letters of credit. The maximum amount of additional indebtedness (as defined by the ABL Facility) that could have been outstanding on December 31, 2016, after outstanding borrowings and letters of credit, was approximately $87,275,000. The maximum availability under the ABL Facility fluctuates with the general seasonality of the business and increases and decreases with changes in the Company’s inventory and accounts receivable balances. The maximum availability is at its highest during the first half of the year when the Company’s inventory and accounts receivable balances are higher and is lower during the second half of the year when the Company's inventory levels decrease and its accounts receivable decrease as a result of cash collections and lower sales. Average outstanding borrowings during the year ended December 31, 2016 were $18,795,000, and average amounts available under the ABL Facility during the year ended December 31, 2016, after outstanding borrowings and letters of credit, was approximately $99,669,000. Amounts borrowed under the ABL Facility may be repaid and borrowed as needed. The entire outstanding principal amount (if any) is due and payable at June 23, 2019. The ABL Facility includes certain restrictions including, among other things, restrictions on the incurrence of additional debt, liens, stock repurchases and other restricted payments, asset sales, investments, mergers, acquisitions and affiliate transactions. In addition, the ABL Facility imposes restrictions on the amount the Company could pay in annual cash dividends, including meeting certain restrictions on the amount of additional indebtedness and requirements to maintain a certain fixed charge coverage ratio under certain circumstances. As of December 31, 2016, the maximum amount that the Company could have paid out in dividends was $52,775,000. As of December 31, 2016, the Company was in compliance with all financial covenants of the ABL Facility. Additionally, the Company is subject to compliance with a fixed charge coverage ratio covenant during, and continuing 30 days after, any period in which the Company’s borrowing base availability, as amended, falls below $23,000,000. The Company’s borrowing base availability was above $23,000,000 during the year ended December 31, 2016, and the Company was in compliance with the fixed charge coverage ratio as of December 31, 2016. Had the Company not been in compliance with the fixed charge coverage ratio as of December 31, 2016, the Company's maximum amount of additional indebtedness that could have been outstanding on December 31, 2016 would have been reduced by $23,000,000. The interest rate applicable to outstanding loans under the ABL Facility fluctuates depending on the Company’s “availability ratio," which is expressed as a percentage of (i) the average daily availability under the ABL Facility to (ii) the sum of the Canadian, the U.K. and the U.S. borrowing bases, as adjusted. The applicable margin for any month will be reduced by 0.25% if the Company’s availability ratio is greater than or equal to 67% and the Company’s “leverage ratio” (as defined below) is less than 4.0 to 1.0 as of the last day of the month for which financial statements have been delivered, so long as no default or event of default exists. The Company’s “leverage ratio” is the ratio of the amount of debt for borrowed money to the 12-month trailing EBITDA (as defined in the ABL Facility), each determined on a consolidated basis. At December 31, 2016, the Company’s trailing 12-month average interest rate applicable to its outstanding loans under the ABL Facility was 2.56%. In addition, the ABL Facility provides for monthly fees ranging from 0.25% to 0.375% of the unused portion of the ABL Facility, depending on the prior month’s average daily balance of revolver loans and stated amount of letters of credit relative to lenders’ commitments. The fees incurred in connection with the origination and amendment of the ABL Facility totaled $4,991,000, which will be amortized into interest expense over the term of the ABL Facility agreement. Unamortized origination fees as of December 31, 2016 and 2015 were $1,297,000 and $1,781,000, respectively, of which $519,000 and $509,000, respectively, were included in other current assets and $778,000 and $1,272,000, respectively, were included in other long-term assets in the accompanying consolidated balance sheets. Japan ABL Facility The Company has a separate asset-based loan and guarantee agreement between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, Ltd and The Development Bank of Japan (as amended, the "Japan ABL Facility"), which provides a credit facility of up to 2 billion Yen (or $17,094,000, using the exchange rate in effect as of December 31, 2016) over a two-year term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible inventory. The Company had $11,966,000 outstanding under this facility at December 31, 2016, and the maximum amount that could have been outstanding at December 31, 2016 was 1,400,000,000 Yen (or $11,966,000). The Japan ABL Facility is subject to an effective interest rate equal to TIBOR plus 0.25% and includes certain restrictions including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2016, the Company was in compliance with these covenants. At December 31, 2016, the trailing 12-month average interest rate applicable to the Company's outstanding loans under the Japan ABL Facility was subject to an effective interest rate of 0.34%. The agreement expires on January 22, 2018. Convertible Senior Notes In 2012, the Company issued $112,500,000 of 3.75% Convertible Senior Notes (the “convertible notes”). The convertible notes were convertible, at the option of the note holder, at any time on or prior to the close of business on the business day immediately preceding August 15, 2019, into shares of common stock at an initial conversion rate of 133.3333 shares per $1,000 principal amount of convertible notes, which is equal to an aggregate of 15,000,000 shares of common stock at a conversion price of approximately $7.50 per share, subject to customary anti-dilution adjustments. In connection with these convertible notes, the Company incurred transactional fees of $3,537,000. During the second half of 2015, the convertible notes were retired pursuant to certain exchange transactions and shareholder conversions, which resulted, among other things, in the issuance of approximately 15,000,000 shares of common stock to the note holders. In connection with the retirement of the convertible notes, the Company recorded $108,955,000 in shareholders' equity as of December 31, 2015, net of the outstanding discount of $3,395,000. There were no convertible notes outstanding as of December 31, 2016 and 2015. In connection with the retirement of the convertible notes in 2015, the Company accelerated the amortization of transaction fees during the second half of 2015. There were no transaction fees remaining to be amortized at December 31, 2016. Total interest and amortization expense recognized during the years ended December 31, 2015 and 2014 was $3,158,000 and $4,957,000, respectively.

Note 3. Financing Arrangements

In addition to cash on hand, as well as cash generated from operations, the Company relies on its primary and Japan asset-based revolving credit facilities to manage seasonal fluctuations in liquidity and to provide additional liquidity when the Company’s operating cash flows are not sufficient to fund the Company’s requirements. As of December 31, 2016, the Company had $11,966,000 outstanding under these facilities, $823,000 in outstanding letters of credit, and $125,975,000 in cash and cash equivalents. The combined maximum amount that could have been outstanding under both facilities on December 31, 2016, after letters of credit, was $99,241,000, resulting in total available liquidity, including cash on hand of $225,216,000. The maximum amount that could have been outstanding under the Company's primary asset-based revolving credit facility on December 31, 2015 was $105,492,000, and total available liquidity, including cash on hand of $155,293,000.

Primary Asset-Based Revolving Credit Facility

The Company's primary credit facility is a Loan and Security Agreement with Bank of America N.A. and other lenders (as amended, the “ABL Facility”), which provides a senior secured asset-based revolving credit facility of up to $230,000,000, comprised of a $160,000,000 U.S. facility, a $25,000,000 Canadian facility, and a $45,000,000 United Kingdom facility, in each case subject to borrowing base availability under the applicable facility. The amounts outstanding under the ABL Facility are secured by certain assets, including cash (to the extent pledged by the Company), inventory and accounts receivable of the Company’s subsidiaries in the United States, Canada and the United Kingdom.

As of December 31, 2016, the Company had no borrowings outstanding under the ABL Facility and $823,000 in outstanding letters of credit. The maximum amount of additional indebtedness (as defined by the ABL Facility) that could have been outstanding on December 31, 2016, after outstanding borrowings and letters of credit, was approximately $87,275,000. The maximum availability under the ABL Facility fluctuates with the general seasonality of the business and increases and decreases with changes in the Company’s inventory and accounts receivable balances. The maximum availability is at its highest during the first half of the year when the Company’s inventory and accounts receivable balances are higher and is lower during the second half of the year when the Company's inventory levels decrease and its accounts receivable decrease as a result of cash collections and lower sales. Average outstanding borrowings during the year ended December 31, 2016 were $18,795,000, and average amounts available under the ABL Facility during the year ended December 31, 2016, after outstanding borrowings and letters of credit, was approximately $99,669,000. Amounts borrowed under the ABL Facility may be repaid and borrowed as needed. The entire outstanding principal amount (if any) is due and payable at June 23, 2019.

The ABL Facility includes certain restrictions including, among other things, restrictions on the incurrence of additional debt, liens, stock repurchases and other restricted payments, asset sales, investments, mergers, acquisitions and affiliate transactions. In addition, the ABL Facility imposes restrictions on the amount the Company could pay in annual cash dividends, including meeting certain restrictions on the amount of additional indebtedness and requirements to maintain a certain fixed charge coverage ratio under certain circumstances. As of December 31, 2016, the maximum amount that the Company could have paid out in dividends was $52,775,000. As of December 31, 2016, the Company was in compliance with all financial covenants of the ABL Facility. Additionally, the Company is subject to compliance with a fixed charge coverage ratio covenant during, and continuing 30 days after, any period in which the Company’s borrowing base availability, as amended, falls below $23,000,000. The Company’s borrowing base availability was above $23,000,000 during the year ended December 31, 2016, and the Company was in compliance with the fixed charge coverage ratio as of December 31, 2016. Had the Company not been in compliance with the fixed charge coverage ratio as of December 31, 2016, the Company's maximum amount of additional indebtedness that could have been outstanding on December 31, 2016 would have been reduced by $23,000,000.

The interest rate applicable to outstanding loans under the ABL Facility fluctuates depending on the Company’s “availability ratio," which is expressed as a percentage of (i) the average daily availability under the ABL Facility to (ii) the sum of the Canadian, the U.K. and the U.S. borrowing bases, as adjusted. The applicable margin for any month will be reduced by 0.25% if the Company’s availability ratio is greater than or equal to 67% and the Company’s “leverage ratio” (as defined below) is less than 4.0 to 1.0 as of the last day of the month for which financial statements have been delivered, so long as no default or event of default exists. The Company’s “leverage ratio” is the ratio of the amount of debt for borrowed money to the 12-month trailing EBITDA (as defined in the ABL Facility), each determined on a consolidated basis. At December 31, 2016, the Company’s trailing 12-month average interest rate applicable to its outstanding loans under the ABL Facility was 2.56%.

In addition, the ABL Facility provides for monthly fees ranging from 0.25% to 0.375% of the unused portion of the ABL Facility, depending on the prior month’s average daily balance of revolver loans and stated amount of letters of credit relative to lenders’ commitments.

The fees incurred in connection with the origination and amendment of the ABL Facility totaled $4,991,000, which will be amortized into interest expense over the term of the ABL Facility agreement. Unamortized origination fees as of December 31, 2016 and 2015 were $1,297,000 and $1,781,000, respectively, of which $519,000 and $509,000, respectively, were included in other current assets and $778,000 and $1,272,000, respectively, were included in other long-term assets in the accompanying consolidated balance sheets.

Japan ABL Facility

The Company has a separate asset-based loan and guarantee agreement between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, Ltd and The Development Bank of Japan (as amended, the "Japan ABL Facility"), which provides a credit facility of up to 2 billion Yen (or $17,094,000, using the exchange rate in effect as of December 31, 2016) over a two-year term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible inventory. The Company had $11,966,000 outstanding under this facility at December 31, 2016, and the maximum amount that could have been outstanding at December 31, 2016 was 1,400,000,000 Yen (or $11,966,000).

The Japan ABL Facility is subject to an effective interest rate equal to TIBOR plus 0.25% and includes certain restrictions including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2016, the Company was in compliance with these covenants. At December 31, 2016, the trailing 12-month average interest rate applicable to the Company's outstanding loans under the Japan ABL Facility was subject to an effective interest rate of 0.34%. The agreement expires on January 22, 2018.

Convertible Senior Notes

In 2012, the Company issued $112,500,000 of 3.75% Convertible Senior Notes (the “convertible notes”). The convertible notes were convertible, at the option of the note holder, at any time on or prior to the close of business on the business day immediately preceding August 15, 2019, into shares of common stock at an initial conversion rate of 133.3333 shares per $1,000 principal amount of convertible notes, which is equal to an aggregate of 15,000,000 shares of common stock at a conversion price of approximately $7.50 per share, subject to customary anti-dilution adjustments. In connection with these convertible notes, the Company incurred transactional fees of $3,537,000.

During the second half of 2015, the convertible notes were retired pursuant to certain exchange transactions and shareholder conversions, which resulted, among other things, in the issuance of approximately 15,000,000 shares of common stock to the note holders. In connection with the retirement of the convertible notes, the Company recorded $108,955,000 in shareholders' equity as of December 31, 2015, net of the outstanding discount of $3,395,000. There were no convertible notes outstanding as of December 31, 2016 and 2015.

In connection with the retirement of the convertible notes in 2015, the Company accelerated the amortization of transaction fees during the second half of 2015. There were no transaction fees remaining to be amortized at December 31, 2016. Total interest and amortization expense recognized during the years ended December 31, 2015 and 2014 was $3,158,000 and $4,957,000, respectively.