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Segment Information - Summary of Company's Reportable Segments (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Net sales                      
Net sales                 $ 409,776 $ 439,192 $ 424,404
Interest income                      
Interest income                 618 648 575
Interest expense                      
Interest expense                 (450) (597) (827)
Income taxes                      
Income taxes                 11,207 15,541 15,010
Net income                      
Net income 3,132 6,104 6,386 4,965 5,273 9,284 6,596 8,133 20,587 29,286 30,984
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 21,034 21,043 18,912
Depreciation and amortization                      
Depreciation and amortization                 12,088 11,564 10,525
Identifiable assets                      
Assets 332,406       333,064       332,406 333,064  
Operating Segments [Member] | PLP-USA [Member]
                      
Net sales                      
Net sales                 144,054 162,027 146,146
Interest income                      
Interest income                 0 3 0
Interest expense                      
Interest expense                 (305) (437) (270)
Income taxes                      
Income taxes                 6,286 9,581 6,708
Net income                      
Net income                 10,875 13,290 10,413
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 12,262 6,702 3,798
Depreciation and amortization                      
Depreciation and amortization                 3,793 3,520 3,438
Identifiable assets                      
Assets 90,414       84,192       90,414 84,192  
Long-lived assets                      
Long-lived assets 36,888       27,353       36,888 27,353  
Operating Segments [Member] | The Americas [Member]
                      
Net sales                      
Net sales                 91,497 92,584 100,144
Interest income                      
Interest income                 290 283 160
Interest expense                      
Interest expense                 (41) (58) (295)
Income taxes                      
Income taxes                 2,585 2,722 3,864
Net income                      
Net income                 5,896 6,763 8,159
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 3,107 2,781 7,114
Depreciation and amortization                      
Depreciation and amortization                 2,444 2,565 2,244
Identifiable assets                      
Assets 73,200       67,745       73,200 67,745  
Long-lived assets                      
Long-lived assets 19,168       20,069       19,168 20,069  
Operating Segments [Member] | EMEA [Member]
                      
Net sales                      
Net sales                 61,543 66,272 61,430
Interest income                      
Interest income                 215 209 155
Interest expense                      
Interest expense                 (68) (50) (47)
Income taxes                      
Income taxes                 2,052 2,769 1,637
Net income                      
Net income                 6,047 6,840 5,519
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 2,573 2,816 2,427
Depreciation and amortization                      
Depreciation and amortization                 1,792 1,714 1,818
Identifiable assets                      
Assets 51,345       51,370       51,345 51,370  
Long-lived assets                      
Long-lived assets 14,467       13,263       14,467 13,263  
Operating Segments [Member] | Asia-Pacific [Member]
                      
Net sales                      
Net sales                 112,682 118,309 116,684
Interest income                      
Interest income                 113 153 260
Interest expense                      
Interest expense                 (36) (52) (215)
Income taxes                      
Income taxes                 284 469 2,801
Net income                      
Net income                 (2,231) 2,393 6,893
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 3,092 8,744 5,573
Depreciation and amortization                      
Depreciation and amortization                 4,059 3,765 3,025
Identifiable assets                      
Assets 117,129       129,437       117,129 129,437  
Long-lived assets                      
Long-lived assets 29,938       32,641       29,938 32,641  
Segment Reconciling Items [Member]
                      
Net sales                      
Net sales                 409,776 439,192 424,404
Interest income                      
Interest income                 618 648 575
Interest expense                      
Interest expense                 (450) (597) (827)
Income taxes                      
Income taxes                 11,207 15,541 15,010
Net income                      
Net income                 20,587 29,286 30,984
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 21,034 21,043 18,912
Depreciation and amortization                      
Depreciation and amortization                 12,088 11,564 10,525
Identifiable assets                      
Assets 332,088       332,744       332,088 332,744  
Long-lived assets                      
Long-lived assets 100,461       93,326       100,461 93,326  
Intersegment Eliminations [Member]
                      
Intersegment sales                      
Intersegment sales                 31,714 35,386 30,106
Intersegment Eliminations [Member] | PLP-USA [Member]
                      
Intersegment sales                      
Intersegment sales                 12,939 8,537 9,095
Intersegment Eliminations [Member] | The Americas [Member]
                      
Intersegment sales                      
Intersegment sales                 6,204 7,501 7,048
Intersegment Eliminations [Member] | EMEA [Member]
                      
Intersegment sales                      
Intersegment sales                 2,080 4,582 1,968
Intersegment Eliminations [Member] | Asia-Pacific [Member]
                      
Intersegment sales                      
Intersegment sales                 10,491 14,766 11,995
Corporate, Non-Segment [Member]
                      
Identifiable assets                      
Assets $ 318       $ 320       $ 318 $ 320