Financing Arrangements	12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]
Financing Arrangements	Note 4. Financing Arrangements In addition to cash on hand, as well as cash generated from operations, the Company relies on its primary asset-based revolving credit facility and its 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, 2017, the Company had $87,755,000 outstanding under these facilities, $887,000 in outstanding letters of credit, and $85,674,000 in cash and cash equivalents. As of December 31, 2017, the Company's available liquidity, which is comprised of cash on hand and amounts available under both facilities, after letters of credit was $238,884,000. At 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. As of December 31, 2016, the Company's available liquidity was $225,216,000. Primary Asset-Based Revolving Credit Facility In November 2017, the Company amended and restated its primary credit facility (the Third Amended and Restated Loan and Security Agreement) with Bank of America N.A. and other lenders (the “ABL Facility”), which provides a senior secured asset-based revolving credit facility of up to $330,000,000, comprised of a $260,000,000 U.S. facility (of which $20,000,000 is available for letters of credit), a $25,000,000 Canadian facility (of which $5,000,000 is available for letters of credit), and a $45,000,000 United Kingdom facility (of which $2,000,000 is available for letters of credit), 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), the Company's intellectual property, certain eligible real estate, inventory and accounts receivable of the Company’s subsidiaries in the United States, Canada and the United Kingdom. The real estate and intellectual property components of the borrowing base under the ABL Facility are both amortizing. The amount available for the real estate portion is reduced quarterly over a 15-year period, and the amount available for the intellectual property portion is reduced quarterly over a 3-year period. As of December 31, 2017, the Company had $74,000,000 in borrowings outstanding under the ABL Facility and $887,000 in outstanding letters of credit. Amounts available under the ABL Facility fluctuate with the general seasonality of the business and increase and decrease with changes in the Company’s inventory and accounts receivable balances. Amounts available are highest during the first half of the year when the Company’s inventory and accounts receivable balances are higher and 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, 2017 were $40,657,000, and average amounts available under the ABL Facility during the year ended December 31, 2017, after outstanding borrowings and letters of credit, was approximately $118,282,000. 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 November 20, 2022. 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, 2017, 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 10% of the maximum facility amount. The Company’s borrowing base availability was above $33,000,000 during the year ended December 31, 2017, and the Company was in compliance with the fixed charge coverage ratio as of December 31, 2017. Had the Company not been in compliance with the fixed charge coverage ratio as of December 31, 2017, the Company's maximum amount of additional indebtedness that could have been outstanding on December 31, 2017 would have been reduced by $33,000,000. 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% so long as no default or event of default exists. At December 31, 2017, the Company’s trailing 12-month average interest rate applicable to its outstanding loans under the ABL Facility was 3.32%. The ABL Facility provides for monthly fees of 0.25% of the unused portion of the ABL Facility. The fees incurred in connection with the origination and amendment of the ABL Facility totaled $2,246,000, which are amortized into interest expense over the term of the ABL Facility agreement. Unamortized origination fees as of December 31, 2017 and 2016 were $2,197,000 and $1,297,000, respectively, of which $454,000 and $519,000, respectively, were included in other current assets and $1,743,000 and $778,000, respectively, were included in other long-term assets in the accompanying consolidated balance sheets. In addition to the revolving credit facility, the Company also has a senior secured term loan facility (the "Term Loan Facility") in an amount $30,000,000 under the ABL Facility agreement, which is secured by a portion of the Company's intellectual property. The Term Loan Facility provides for a monthly commitment fee equal to 0.50% on the unused portion of the Term Loan Facility until the Term Loan Facility is drawn or terminated. The Term Loan Facility may be borrowed at any time until April 20, 2018 and will begin amortizing 15 months after the borrowing date. If the Term Loan Facility is ever outstanding, the Company must maintain a minimum Fixed Charge Coverage Ratio of 1.25 and a maximum leverage ratio of 4.0. The entire outstanding principal amount (if any) is due and payable at November 20, 2021. There were no amounts outstanding under the Term Loan Facility as of December 31, 2017. The Term Loan Facility is also subject to a one-time excess cash flow payment for the 2018 fiscal year, which cannot exceed the least of (i) 50% of excess cash flow, (ii) $10 million and (iii) the amount that would put the Company into cash dominion under the ABL Facility. The excess cash flow payment must be made within 60 days after the delivery of audited financial statements for 2018. 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 2,000,000,000 Yen (or U.S. $17,748,000, using the exchange rate in effect as of December 31, 2017) 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 1,550,000,000 Yen (or U.S. $13,755,000) outstanding under this facility at December 31, 2017. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017, the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.25%. At December 31, 2017, the trailing 12-month average interest rate applicable to the Company's outstanding borrowings under this facility was 0.28%. During the first quarter of 2017, the Company entered into a second asset-based loan between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, LTD, which provides a credit facility of up to 1,000,000,000 Yen (or U.S. $8,874,000) over a 10-month term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible accounts receivable. The Company had no borrowings outstanding under this facility as of December 31, 2017. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017, the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.75%. At December 31, 2017, 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 0.78%. In January 2018, the Company renewed the two asset-based loans with the Bank of Tokyo-Mitsubishi UFJ, combining them into one revolving credit facility. The new agreement provides a credit facility of up to 4 billion Yen (or $36,776,000, using the exchange rate in effect as of January 31, 2018) over a three-year term, subject to borrowing base availability under the facility. The amounts are secured by certain assets, including eligible inventory and accounts receivable. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. This facility is subject to an effective interest rate equal to TIBOR plus 0.80%. Equipment Note In December 2017, the Company entered into a long-term financing agreement (the "Equipment Note") secured by certain equipment at the Company's golf ball manufacturing facility. As of December 31, 2017, the Company had $11,815,000 outstanding under this agreement, of which $2,367,000 is due within the next 12 months and $9,448,000 is due over the balance of the term. The Company's interest rate applicable to outstanding borrowings was 3.79%. At December 31, 2017, interest expense was nominal. The Equipment Note is subject to compliance with a fixed charge coverage ratio covenant of 1.25 during each fiscal quarter in which the Company has outstanding borrowings, and a fixed charge coverage ratio of 1.0 during periods in which no borrowings are outstanding. As of December 31, 2017, the Company was in compliance with these covenants. 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, 2017 and 2016. 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, 2017 or 2016. Total interest and amortization expense recognized during the year ended December 31, 2015 was $3,158,000.

Note 4. Financing Arrangements

In addition to cash on hand, as well as cash generated from operations, the Company relies on its primary asset-based revolving credit facility and its 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, 2017, the Company had $87,755,000 outstanding under these facilities, $887,000 in outstanding letters of credit, and $85,674,000 in cash and cash equivalents. As of December 31, 2017, the Company's available liquidity, which is comprised of cash on hand and amounts available under both facilities, after letters of credit was $238,884,000. At 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. As of December 31, 2016, the Company's available liquidity was $225,216,000.

Primary Asset-Based Revolving Credit Facility

In November 2017, the Company amended and restated its primary credit facility (the Third Amended and Restated Loan and Security Agreement) with Bank of America N.A. and other lenders (the “ABL Facility”), which provides a senior secured asset-based revolving credit facility of up to $330,000,000, comprised of a $260,000,000 U.S. facility (of which $20,000,000 is available for letters of credit), a $25,000,000 Canadian facility (of which $5,000,000 is available for letters of credit), and a $45,000,000 United Kingdom facility (of which $2,000,000 is available for letters of credit), 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), the Company's intellectual property, certain eligible real estate, inventory and accounts receivable of the Company’s subsidiaries in the United States, Canada and the United Kingdom. The real estate and intellectual property components of the borrowing base under the ABL Facility are both amortizing. The amount available for the real estate portion is reduced quarterly over a 15-year period, and the amount available for the intellectual property portion is reduced quarterly over a 3-year period.

As of December 31, 2017, the Company had $74,000,000 in borrowings outstanding under the ABL Facility and $887,000 in outstanding letters of credit. Amounts available under the ABL Facility fluctuate with the general seasonality of the business and increase and decrease with changes in the Company’s inventory and accounts receivable balances. Amounts available are highest during the first half of the year when the Company’s inventory and accounts receivable balances are higher and 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, 2017 were $40,657,000, and average amounts available under the ABL Facility during the year ended December 31, 2017, after outstanding borrowings and letters of credit, was approximately $118,282,000. 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 November 20, 2022.

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, 2017, 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 10% of the maximum facility amount. The Company’s borrowing base availability was above $33,000,000 during the year ended December 31, 2017, and the Company was in compliance with the fixed charge coverage ratio as of December 31, 2017. Had the Company not been in compliance with the fixed charge coverage ratio as of December 31, 2017, the Company's maximum amount of additional indebtedness that could have been outstanding on December 31, 2017 would have been reduced by $33,000,000.

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% so long as no default or event of default exists. At December 31, 2017, the Company’s trailing 12-month average interest rate applicable to its outstanding loans under the ABL Facility was 3.32%. The ABL Facility provides for monthly fees of 0.25% of the unused portion of the ABL Facility.

The fees incurred in connection with the origination and amendment of the ABL Facility totaled $2,246,000, which are amortized into interest expense over the term of the ABL Facility agreement. Unamortized origination fees as of December 31, 2017 and 2016 were $2,197,000 and $1,297,000, respectively, of which $454,000 and $519,000, respectively, were included in other current assets and $1,743,000 and $778,000, respectively, were included in other long-term assets in the accompanying consolidated balance sheets.

In addition to the revolving credit facility, the Company also has a senior secured term loan facility (the "Term Loan Facility") in an amount $30,000,000 under the ABL Facility agreement, which is secured by a portion of the Company's intellectual property. The Term Loan Facility provides for a monthly commitment fee equal to 0.50% on the unused portion of the Term Loan Facility until the Term Loan Facility is drawn or terminated. The Term Loan Facility may be borrowed at any time until April 20, 2018 and will begin amortizing 15 months after the borrowing date. If the Term Loan Facility is ever outstanding, the Company must maintain a minimum Fixed Charge Coverage Ratio of 1.25 and a maximum leverage ratio of 4.0. The entire outstanding principal amount (if any) is due and payable at November 20, 2021. There were no amounts outstanding under the Term Loan Facility as of December 31, 2017.

The Term Loan Facility is also subject to a one-time excess cash flow payment for the 2018 fiscal year, which cannot exceed the least of (i) 50% of excess cash flow, (ii) $10 million and (iii) the amount that would put the Company into cash dominion under the ABL Facility. The excess cash flow payment must be made within 60 days after the delivery of audited financial statements for 2018.

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 2,000,000,000 Yen (or U.S. $17,748,000, using the exchange rate in effect as of December 31, 2017) 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 1,550,000,000 Yen (or U.S. $13,755,000) outstanding under this facility at December 31, 2017. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017, the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.25%. At December 31, 2017, the trailing 12-month average interest rate applicable to the Company's outstanding borrowings under this facility was 0.28%.

During the first quarter of 2017, the Company entered into a second asset-based loan between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, LTD, which provides a credit facility of up to 1,000,000,000 Yen (or U.S. $8,874,000) over a 10-month term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible accounts receivable. The Company had no borrowings outstanding under this facility as of December 31, 2017. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017, the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.75%. At December 31, 2017, 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 0.78%.

In January 2018, the Company renewed the two asset-based loans with the Bank of Tokyo-Mitsubishi UFJ, combining them into one revolving credit facility. The new agreement provides a credit facility of up to 4 billion Yen (or $36,776,000, using the exchange rate in effect as of January 31, 2018) over a three-year term, subject to borrowing base availability under the facility. The amounts are secured by certain assets, including eligible inventory and accounts receivable. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. This facility is subject to an effective interest rate equal to TIBOR plus 0.80%.

Equipment Note

In December 2017, the Company entered into a long-term financing agreement (the "Equipment Note") secured by certain equipment at the Company's golf ball manufacturing facility. As of December 31, 2017, the Company had $11,815,000 outstanding under this agreement, of which $2,367,000 is due within the next 12 months and $9,448,000 is due over the balance of the term. The Company's interest rate applicable to outstanding borrowings was 3.79%. At December 31, 2017, interest expense was nominal.

The Equipment Note is subject to compliance with a fixed charge coverage ratio covenant of 1.25 during each fiscal quarter in which the Company has outstanding borrowings, and a fixed charge coverage ratio of 1.0 during periods in which no borrowings are outstanding. As of December 31, 2017, the Company was in compliance with these covenants.

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, 2017 and 2016.

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, 2017 or 2016. Total interest and amortization expense recognized during the year ended December 31, 2015 was $3,158,000.