3.6.0.2 html 108 168 1 true 24 0 false 4 false false R1.htm 000 - Document - Document And Entity Information Sheet http://http/20161127/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) Sheet http://http/20161127/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) Statements 2 false false R3.htm 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://http/20161127/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Consolidated Statements of Operations (Unaudited) Sheet http://http/20161127/role/statement-consolidated-statements-of-operations-unaudited Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 004 - Statement - Consolidated Statements of Comprehensive Earnings (Unaudited) Sheet http://http/20161127/role/statement-consolidated-statements-of-comprehensive-earnings-unaudited Consolidated Statements of Comprehensive Earnings (Unaudited) Statements 5 false false R6.htm 005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://http/20161127/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 006 - Disclosure - Note 1 - Consolidated Financial Statements Sheet http://http/20161127/role/statement-note-1-consolidated-financial-statements Note 1 - Consolidated Financial Statements Notes 7 false false R8.htm 007 - Disclosure - Note 2 - Fair Value Measurements Sheet http://http/20161127/role/statement-note-2-fair-value-measurements Note 2 - Fair Value Measurements Notes 8 false false R9.htm 008 - Disclosure - Note 3 - Marketable Securities Sheet http://http/20161127/role/statement-note-3-marketable-securities- Note 3 - Marketable Securities Notes 9 false false R10.htm 009 - Disclosure - Note 4 - Inventories Sheet http://http/20161127/role/statement-note-4-inventories Note 4 - Inventories Notes 10 false false R11.htm 010 - Disclosure - Note 5 - Long-term Debt Sheet http://http/20161127/role/statement-note-5-longterm-debt Note 5 - Long-term Debt Notes 11 false false R12.htm 011 - Disclosure - Note 6 - Stock-based Compensation Sheet http://http/20161127/role/statement-note-6-stockbased-compensation Note 6 - Stock-based Compensation Notes 12 false false R13.htm 012 - Disclosure - Note 7 - Restructuring Charges Sheet http://http/20161127/role/statement-note-7-restructuring-charges Note 7 - Restructuring Charges Notes 13 false false R14.htm 013 - Disclosure - Note 8 - Earnings Per Share Sheet http://http/20161127/role/statement-note-8-earnings-per-share Note 8 - Earnings Per Share Notes 14 false false R15.htm 014 - Disclosure - Note 9 - Shareholders' Equity Sheet http://http/20161127/role/statement-note-9-shareholders-equity Note 9 - Shareholders' Equity Notes 15 false false R16.htm 015 - Disclosure - Note 10 - Income Taxes Sheet http://http/20161127/role/statement-note-10-income-taxes Note 10 - Income Taxes Notes 16 false false R17.htm 016 - Disclosure - Note 11 - Geographic Regions Sheet http://http/20161127/role/statement-note-11-geographic-regions Note 11 - Geographic Regions Notes 17 false false R18.htm 017 - Disclosure - Note 12 - Contingencies Sheet http://http/20161127/role/statement-note-12-contingencies Note 12 - Contingencies Notes 18 false false R19.htm 018 - Document - Note 13 - Accounting Pronouncements Sheet http://http/20161127/role/statement-note-13-accounting-pronouncements Note 13 - Accounting Pronouncements Uncategorized 19 false false R20.htm 019 - Disclosure - Note 3 - Marketable Securities (Tables) Sheet http://http/20161127/role/statement-note-3-marketable-securities-tables Note 3 - Marketable Securities (Tables) Uncategorized 20 false false R21.htm 020 - Disclosure - Note 4 - Inventories (Tables) Sheet http://http/20161127/role/statement-note-4-inventories-tables Note 4 - Inventories (Tables) Uncategorized 21 false false R22.htm 021 - Disclosure - Note 6 - Stock-based Compensation (Tables) Sheet http://http/20161127/role/statement-note-6-stockbased-compensation-tables Note 6 - Stock-based Compensation (Tables) Uncategorized 22 false false R23.htm 022 - Disclosure - Note 8 - Earnings Per Share (Tables) Sheet http://http/20161127/role/statement-note-8-earnings-per-share-tables Note 8 - Earnings Per Share (Tables) Uncategorized 23 false false R24.htm 023 - Disclosure - Note 11 - Geographic Regions (Tables) Sheet http://http/20161127/role/statement-note-11-geographic-regions-tables Note 11 - Geographic Regions (Tables) Uncategorized 24 false false R25.htm 024 - Disclosure - Note 3 - Marketable Securities - Summary of Available-for-sale Securities (Details) Sheet http://http/20161127/role/statement-note-3-marketable-securities-summary-of-availableforsale-securities-details Note 3 - Marketable Securities - Summary of Available-for-sale Securities (Details) Uncategorized 25 false false R26.htm 025 - Disclosure - Note 3 - Marketable Securities - Summary of Unrealized Gains/Losses on Available-for-sale Securities (Details) Sheet http://http/20161127/role/statement-note-3-marketable-securities-summary-of-unrealized-gainslosses-on-availableforsale-securities-details Note 3 - Marketable Securities - Summary of Unrealized Gains/Losses on Available-for-sale Securities (Details) Uncategorized 26 false false R27.htm 026 - Disclosure - Note 3 - Marketable Securities - Estimated Fair Value of Securities by Contractual Maturity (Details) Sheet http://http/20161127/role/statement-note-3-marketable-securities-estimated-fair-value-of-securities-by-contractual-maturity-details Note 3 - Marketable Securities - Estimated Fair Value of Securities by Contractual Maturity (Details) Uncategorized 27 false false R28.htm 027 - Disclosure - Note 4 - Inventories - Schedule of Inventories (Details) Sheet http://http/20161127/role/statement-note-4-inventories-schedule-of-inventories-details Note 4 - Inventories - Schedule of Inventories (Details) Uncategorized 28 false false R29.htm 028 - Disclosure - Note 5 - Long-term Debt (Details Textual) Sheet http://http/20161127/role/statement-note-5-longterm-debt-details-textual Note 5 - Long-term Debt (Details Textual) Uncategorized 29 false false R30.htm 029 - Disclosure - Note 6 - Stock-based Compensation (Details Textual) Sheet http://http/20161127/role/statement-note-6-stockbased-compensation-details-textual Note 6 - Stock-based Compensation (Details Textual) Uncategorized 30 false false R31.htm 030 - Disclosure - Note 6 - Stock-based Compensation - Option Activity (Details) Sheet http://http/20161127/role/statement-note-6-stockbased-compensation-option-activity-details Note 6 - Stock-based Compensation - Option Activity (Details) Uncategorized 31 false false R32.htm 031 - Disclosure - Note 7 - Restructuring Charges (Details Textual) Sheet http://http/20161127/role/statement-note-7-restructuring-charges-details-textual Note 7 - Restructuring Charges (Details Textual) Uncategorized 32 false false R33.htm 032 - Disclosure - Note 8 - Earnings Per Share (Details Textual) Sheet http://http/20161127/role/statement-note-8-earnings-per-share-details-textual Note 8 - Earnings Per Share (Details Textual) Uncategorized 33 false false R34.htm 033 - Disclosure - Note 8 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) Sheet http://http/20161127/role/statement-note-8-earnings-per-share-basic-and-diluted-earnings-per-share-details Note 8 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) Uncategorized 34 false false R35.htm 034 - Disclosure - Note 9 - Shareholders' Equity (Details Textual) Sheet http://http/20161127/role/statement-note-9-shareholders-equity-details-textual Note 9 - Shareholders' Equity (Details Textual) Uncategorized 35 false false R36.htm 035 - Disclosure - Note 10 - Income Taxes (Details Textual) Sheet http://http/20161127/role/statement-note-10-income-taxes-details-textual Note 10 - Income Taxes (Details Textual) Uncategorized 36 false false R37.htm 036 - Disclosure - Note 11 - Geographic Regions - Financial Information by Geographic Region, Sale (Details) Sheet http://http/20161127/role/statement-note-11-geographic-regions-financial-information-by-geographic-region-sale-details Note 11 - Geographic Regions - Financial Information by Geographic Region, Sale (Details) Uncategorized 37 false false R38.htm 037 - Disclosure - Note 11 - Geographic Regions - Financial Information by Geographic Region, Assets (Details) Sheet http://http/20161127/role/statement-note-11-geographic-regions-financial-information-by-geographic-region-assets-details Note 11 - Geographic Regions - Financial Information by Geographic Region, Assets (Details) Uncategorized 38 false false R39.htm 038 - Disclosure - Note 12 - Contingencies (Details Textual) Sheet http://http/20161127/role/statement-note-12-contingencies-details-textual Note 12 - Contingencies (Details Textual) Uncategorized 39 false false All Reports Book All Reports pke-20161127.xml pke-20161127.xsd pke-20161127_cal.xml pke-20161127_def.xml pke-20161127_lab.xml pke-20161127_pre.xml true true