Financing Arrangements | Note 2. 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 September 30, 2015, the Company had no borrowings outstanding under either facility, $1,117,000 in outstanding letters of credit, and $41,592,000 in cash and cash equivalents. The combined maximum amount that could have been outstanding under both facilities on September 30, 2015, after letters of credit was $106,187,000 , resulting in total available liquidity including cash on hand of $147,779,000 compared to the maximum amount that could have been outstanding under both facilities on September 30, 2014, of $72,188,000 and total available liquidity including cash on hand of $105,650,000 . Primary Asset-Based Revolving Credit Facility The Company's primary credit facility is a Loan and Security Agreement with Bank of America N.A. (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 September 30, 2015 , the Company had no borrowings outstanding under the ABL Facility and $1,117,000 in outstanding letters of credit. The maximum amount of additional indebtedness (as defined by the ABL Facility) that could have been outstanding on September 30, 2015 , after outstanding borrowings and letters of credit was approximately $89,503,000 . 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. Average outstanding borrowings during the nine months ended September 30, 2015 were $49,049,000 , and average amounts available under the ABL Facility during the first nine months of 2015, after outstanding borrowings and letters of credit, was approximately $85,623,000 . 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 the earlier of (i) the date that is six months prior to the maturity of the Company’s 3.75% Convertible Senior Notes maturing on August 15, 2019 or (ii) June 23, 2019 , if a qualifying refinancing of the Company’s 3.75% Convertible Senior Notes due 2019 has occurred at least six months prior to their maturity. 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 September 30, 2015 , 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 nine months ended September 30, 2015 , and the Company was in compliance with the fixed charge coverage ratio as of September 30, 2015 . Had the Company not been in compliance with the fixed charge coverage ratio as of September 30, 2015 , the Company's maximum amount of additional indebtedness that could have been outstanding on September 30, 2015 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 twelve-month trailing EBITDA (as defined in the ABL Facility), each determined on a consolidated basis. At September 30, 2015 , the Company’s trailing 12 months average interest rate applicable to its outstanding loans under the ABL Facility, including the fees described below, was 4.36% . 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 $4,956,000 , which are amortized into interest expense over the term of the ABL Facility agreement. Unamortized fees at September 30, 2015 and December 31, 2014 totaled $1,903,000 and $2,233,000 , respectively, of which $507,000 and $496,000 were included in other current assets, respectively, and $1,396,000 and $1,737,000 were included in other assets, respectively, in the accompanying consolidated condensed balance sheets. Japan ABL Facility In January 2015, the Company entered into a separate asset-based loan and guarantee agreement (the "Japan ABL Facility") between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, Ltd and The Development Bank of Japan. The Company can borrow up to 2 billion Yen (or U.S. $16,684,000 , using the exchange rate in effect as of September 30, 2015) over a one -year term, and the amounts outstanding are secured by certain assets, including eligible inventory.The Japan ABL Facility is subject to an effective interest rate of 1.48% and includes certain restrictions including covenants related to certain pledged assets and financial performance metrics. As of September 30, 2015 , the Company was in compliance with these covenants. There were no borrowings outstanding under this facility at September 30, 2015 , and the maximum amount that could have been outstanding at September 30, 2015 was $16,684,000 . The Company intends to renew the Japan ABL Facility when the one-year term expires. Convertible Senior Notes In August 2012, the Company issued $112,500,000 of 3.75% Convertible Senior Notes (the “convertible notes”). The convertible notes are 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 was initially 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. The Company incurred transactional fees of $3,537,000 in connection with the issuance of the convertible notes, which are amortized into interest expense over the term of the convertible notes. In August 2015, the Company exchanged $84,983,000 in aggregate principal amount of the convertible notes for 11,331,064 shares of common stock, plus cash payments to the note holders representing an exchange inducement and accrued and unpaid interest through the closing date of the exchange transactions. In connection with the exchange, the Company recorded $2,595,000 of the outstanding discount as of September 30, 2015 to shareholders' equity. Upon completion of the exchange transactions, $27,517,000 in aggregate principal amount of the convertible notes remains outstanding, and such amount is convertible into an aggregate of 3,668,936 shares of common stock at a conversion price of approximately $7.50 per share, subject to anti-dilution adjustments. The Company pays interest of 3.75% per year on the principal amount of the convertible notes, payable semiannually in arrears on February 15 and August 15 of each year. The remaining convertible notes mature on August 15, 2019 . In connection with the exchange in August 2015, the Company accelerated the amortization of transaction fees, which resulted in charges of $1,559,000 in the third quarter of 2015. Unamortized transaction fees as of September 30, 2015 and December 31, 2014 were $494,000 and $2,358,000 , respectively, of which $126,000 and $505,000 were included in other current assets as of September 30, 2015 and December 31, 2014 , respectively, and $368,000 and $1,853,000 were included in other long-term assets as of September 30, 2015 and December 31, 2014 , respectively, in the accompanying consolidated condensed balance sheets. The net carrying amount of the convertible notes as of September 30, 2015 and December 31, 2014 was $26,701,000 and $108,574,000 , respectively, and the unamortized discount as of September 30, 2015 was $816,000 . Total interest and amortization expense recognized for the three and nine months ended September 30, 2015 was $767,000 and $3,273,000 , respectively, and $1,241,000 and $3,715,000 for the three and nine months ended September 30, 2014, respectively. Upon the occurrence of a change of control of the Company or a termination of trading of the common stock of the Company, note holders will have the option to require the Company to repurchase for cash all or any portion of such note holder’s convertible notes at a price equal to 100% of the principal amount of the repurchased convertible notes, plus accrued and unpaid interest thereon to the repurchase date. In addition, upon the occurrence of certain change of control events of the Company, the Company will pay a premium on the convertible notes converted in connection with such change of control events by increasing the conversion rate on such convertible notes. The convertible notes contain certain covenants including payment of principal and interest, certain repurchase obligations, obligations of the Company to convert the convertible notes, and other customary covenants as set forth in the Indenture. The Company was in compliance with these covenants as of September 30, 2015 . The convertible notes can be redeemed for cash in whole or in part at the option of the Company at a redemption price equal to 100% of the principal amount of the convertible notes to be redeemed, plus accrued and unpaid interest thereon to the redemption date. On October 15, 2015, the Company issued a notice of redemption for the remaining $27,517,000 in aggregate principal amount of the convertible notes outstanding pursuant to the terms of the indenture that governs the convertible notes. The redemption is scheduled to occur on November 16, 2015. The holders of the convertible notes have the right to convert their notes, subject to certain terms, conditions and covenants specified in the convertible notes and the indenture that governs the convertible notes, at any time prior to the close of business on the business day immediately preceding the redemption date at a current conversion rate equivalent to 133.3333 shares of common stock per $1,000 in principal amount of convertible notes. In the event that note holders do not exercise the option to convert the convertible notes into shares of common stock, the Company would be expected to redeem the notes for cash. |